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Finding the Fourth Proportional to 387,622.40, 581,044.80 and 177,411.20

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Solution

The fourth proportional to 387,622.40, 581,044.80 and 177,411.20 is: 265,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,622.40 : 581,044.80 = 177,411.20 : x
  2. Step 2: Convert to fraction form
    387,622.40/581,044.80 = 177,411.20/x
  3. Step 3: Cross multiply
    387,622.40x = 581,044.80 × 177,411.20
  4. Step 4: Simplify right side
    387,622.40x = 103,083,855,221.76
  5. Step 5: Solve for x
    x = 103,083,855,221.76/387,622.40
  6. Step 6: Final answer
    x = 265,938.85

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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.