Home / 387,374.40-581,061.60-137,966.40

Finding the Fourth Proportional to 387,374.40, 581,061.60 and 137,966.40

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Solution

The fourth proportional to 387,374.40, 581,061.60 and 137,966.40 is: 206,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,374.40 : 581,061.60 = 137,966.40 : x
  2. Step 2: Convert to fraction form
    387,374.40/581,061.60 = 137,966.40/x
  3. Step 3: Cross multiply
    387,374.40x = 581,061.60 × 137,966.40
  4. Step 4: Simplify right side
    387,374.40x = 80,166,977,130.24
  5. Step 5: Solve for x
    x = 80,166,977,130.24/387,374.40
  6. Step 6: Final answer
    x = 206,949.60

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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.