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Finding the Fourth Proportional to 484,369.27, 668,353.98 and 280,380.39

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Solution

The fourth proportional to 484,369.27, 668,353.98 and 280,380.39 is: 386,881.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,369.27 : 668,353.98 = 280,380.39 : x
  2. Step 2: Convert to fraction form
    484,369.27/668,353.98 = 280,380.39/x
  3. Step 3: Cross multiply
    484,369.27x = 668,353.98 × 280,380.39
  4. Step 4: Simplify right side
    484,369.27x = 187,393,348,115.55
  5. Step 5: Solve for x
    x = 187,393,348,115.55/484,369.27
  6. Step 6: Final answer
    x = 386,881.17

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1.5x scale

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.