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Finding the Fourth Proportional to 312,515.02, 431,270.85 and 169,274.62

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Solution

The fourth proportional to 312,515.02, 431,270.85 and 169,274.62 is: 233,599.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,515.02 : 431,270.85 = 169,274.62 : x
  2. Step 2: Convert to fraction form
    312,515.02/431,270.85 = 169,274.62/x
  3. Step 3: Cross multiply
    312,515.02x = 431,270.85 × 169,274.62
  4. Step 4: Simplify right side
    312,515.02x = 73,003,209,250.83
  5. Step 5: Solve for x
    x = 73,003,209,250.83/312,515.02
  6. Step 6: Final answer
    x = 233,599.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.