Home / 278,620.72-417,931.20-101,127.36

Finding the Fourth Proportional to 278,620.72, 417,931.20 and 101,127.36

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Solution

The fourth proportional to 278,620.72, 417,931.20 and 101,127.36 is: 151,691.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,620.72 : 417,931.20 = 101,127.36 : x
  2. Step 2: Convert to fraction form
    278,620.72/417,931.20 = 101,127.36/x
  3. Step 3: Cross multiply
    278,620.72x = 417,931.20 × 101,127.36
  4. Step 4: Simplify right side
    278,620.72x = 42,264,278,917.63
  5. Step 5: Solve for x
    x = 42,264,278,917.63/278,620.72
  6. Step 6: Final answer
    x = 151,691.08

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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.