Home / 387,531.57-580,456.09-187,432.35

Finding the Fourth Proportional to 387,531.57, 580,456.09 and 187,432.35

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Solution

The fourth proportional to 387,531.57, 580,456.09 and 187,432.35 is: 280,741.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,531.57 : 580,456.09 = 187,432.35 : x
  2. Step 2: Convert to fraction form
    387,531.57/580,456.09 = 187,432.35/x
  3. Step 3: Cross multiply
    387,531.57x = 580,456.09 × 187,432.35
  4. Step 4: Simplify right side
    387,531.57x = 108,796,249,020.51
  5. Step 5: Solve for x
    x = 108,796,249,020.51/387,531.57
  6. Step 6: Final answer
    x = 280,741.64

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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.