Home / 387,650.91-581,476.52-121,432.11

Finding the Fourth Proportional to 387,650.91, 581,476.52 and 121,432.11

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Solution

The fourth proportional to 387,650.91, 581,476.52 and 121,432.11 is: 182,148.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,650.91 : 581,476.52 = 121,432.11 : x
  2. Step 2: Convert to fraction form
    387,650.91/581,476.52 = 121,432.11/x
  3. Step 3: Cross multiply
    387,650.91x = 581,476.52 × 121,432.11
  4. Step 4: Simplify right side
    387,650.91x = 70,609,922,132.91
  5. Step 5: Solve for x
    x = 70,609,922,132.91/387,650.91
  6. Step 6: Final answer
    x = 182,148.22

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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.