Home / 212,744,661.62-318,462,480.40-138,809,240.74

Finding the Fourth Proportional to 212,744,661.62, 318,462,480.40 and 138,809,240.74

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Solution

The fourth proportional to 212,744,661.62, 318,462,480.40 and 138,809,240.74 is: 207,786,812.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,744,661.62 : 318,462,480.40 = 138,809,240.74 : x
  2. Step 2: Convert to fraction form
    212,744,661.62/318,462,480.40 = 138,809,240.74/x
  3. Step 3: Cross multiply
    212,744,661.62x = 318,462,480.40 × 138,809,240.74
  4. Step 4: Simplify right side
    212,744,661.62x = 44,205,535,108,501,128
  5. Step 5: Solve for x
    x = 44,205,535,108,501,128/212,744,661.62
  6. Step 6: Final answer
    x = 207,786,812.47

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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.