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Finding the Fourth Proportional to 386,924.40, 580,127.40 and 187,340.40

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Solution

The fourth proportional to 386,924.40, 580,127.40 and 187,340.40 is: 280,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,924.40 : 580,127.40 = 187,340.40 : x
  2. Step 2: Convert to fraction form
    386,924.40/580,127.40 = 187,340.40/x
  3. Step 3: Cross multiply
    386,924.40x = 580,127.40 × 187,340.40
  4. Step 4: Simplify right side
    386,924.40x = 108,681,299,166.96
  5. Step 5: Solve for x
    x = 108,681,299,166.96/386,924.40
  6. Step 6: Final answer
    x = 280,885.10

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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.