Home / 387,720.93-581,581.62-121,502.43

Finding the Fourth Proportional to 387,720.93, 581,581.62 and 121,502.43

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Solution

The fourth proportional to 387,720.93, 581,581.62 and 121,502.43 is: 182,253.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,720.93 : 581,581.62 = 121,502.43 : x
  2. Step 2: Convert to fraction form
    387,720.93/581,581.62 = 121,502.43/x
  3. Step 3: Cross multiply
    387,720.93x = 581,581.62 × 121,502.43
  4. Step 4: Simplify right side
    387,720.93x = 70,663,580,073.34
  5. Step 5: Solve for x
    x = 70,663,580,073.34/387,720.93
  6. Step 6: Final answer
    x = 182,253.72

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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.