Home / 278,089.77-417,167.07-100,680.33

Finding the Fourth Proportional to 278,089.77, 417,167.07 and 100,680.33

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Solution

The fourth proportional to 278,089.77, 417,167.07 and 100,680.33 is: 151,032.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,089.77 : 417,167.07 = 100,680.33 : x
  2. Step 2: Convert to fraction form
    278,089.77/417,167.07 = 100,680.33/x
  3. Step 3: Cross multiply
    278,089.77x = 417,167.07 × 100,680.33
  4. Step 4: Simplify right side
    278,089.77x = 42,000,518,272.73
  5. Step 5: Solve for x
    x = 42,000,518,272.73/278,089.77
  6. Step 6: Final answer
    x = 151,032.23

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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.