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Finding the Fourth Proportional to 484,103.61, 668,023.29 and 280,169.46

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Solution

The fourth proportional to 484,103.61, 668,023.29 and 280,169.46 is: 386,610.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,103.61 : 668,023.29 = 280,169.46 : x
  2. Step 2: Convert to fraction form
    484,103.61/668,023.29 = 280,169.46/x
  3. Step 3: Cross multiply
    484,103.61x = 668,023.29 × 280,169.46
  4. Step 4: Simplify right side
    484,103.61x = 187,159,724,426.72
  5. Step 5: Solve for x
    x = 187,159,724,426.72/484,103.61
  6. Step 6: Final answer
    x = 386,610.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.