Home / 278,650.17-417,991.05-89,127.18

Finding the Fourth Proportional to 278,650.17, 417,991.05 and 89,127.18

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Solution

The fourth proportional to 278,650.17, 417,991.05 and 89,127.18 is: 133,695.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,650.17 : 417,991.05 = 89,127.18 : x
  2. Step 2: Convert to fraction form
    278,650.17/417,991.05 = 89,127.18/x
  3. Step 3: Cross multiply
    278,650.17x = 417,991.05 × 89,127.18
  4. Step 4: Simplify right side
    278,650.17x = 37,254,363,551.74
  5. Step 5: Solve for x
    x = 37,254,363,551.74/278,650.17
  6. Step 6: Final answer
    x = 133,695.82

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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.