Home / 387,780.41-581,677.90-121,535.03

Finding the Fourth Proportional to 387,780.41, 581,677.90 and 121,535.03

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Solution

The fourth proportional to 387,780.41, 581,677.90 and 121,535.03 is: 182,304.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,780.41 : 581,677.90 = 121,535.03 : x
  2. Step 2: Convert to fraction form
    387,780.41/581,677.90 = 121,535.03/x
  3. Step 3: Cross multiply
    387,780.41x = 581,677.90 × 121,535.03
  4. Step 4: Simplify right side
    387,780.41x = 70,694,237,814.61
  5. Step 5: Solve for x
    x = 70,694,237,814.61/387,780.41
  6. Step 6: Final answer
    x = 182,304.82

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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.