Home / 212,183,165,146.52-318,117,841,707.60-128,318,251,892.72

Finding the Fourth Proportional to 212,183,165,146.52, 318,117,841,707.60 and 128,318,251,892.72

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Solution

The fourth proportional to 212,183,165,146.52, 318,117,841,707.60 and 128,318,251,892.72 is: 192,382,488,571.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,183,165,146.52 : 318,117,841,707.60 = 128,318,251,892.72 : x
  2. Step 2: Convert to fraction form
    212,183,165,146.52/318,117,841,707.60 = 128,318,251,892.72/x
  3. Step 3: Cross multiply
    212,183,165,146.52x = 318,117,841,707.60 × 128,318,251,892.72
  4. Step 4: Simplify right side
    212,183,165,146.52x = 40,820,325,343,804,241,477,632
  5. Step 5: Solve for x
    x = 40,820,325,343,804,241,477,632/212,183,165,146.52
  6. Step 6: Final answer
    x = 192,382,488,571.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.