Home / 387,981.38-581,996.67-121,752.41

Finding the Fourth Proportional to 387,981.38, 581,996.67 and 121,752.41

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Solution

The fourth proportional to 387,981.38, 581,996.67 and 121,752.41 is: 182,636.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,981.38 : 581,996.67 = 121,752.41 : x
  2. Step 2: Convert to fraction form
    387,981.38/581,996.67 = 121,752.41/x
  3. Step 3: Cross multiply
    387,981.38x = 581,996.67 × 121,752.41
  4. Step 4: Simplify right side
    387,981.38x = 70,859,493,817.92
  5. Step 5: Solve for x
    x = 70,859,493,817.92/387,981.38
  6. Step 6: Final answer
    x = 182,636.32

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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.