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Finding the Fourth Proportional to 495,060.73, 683,066.70 and 280,200.79

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Solution

The fourth proportional to 495,060.73, 683,066.70 and 280,200.79 is: 386,610.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,060.73 : 683,066.70 = 280,200.79 : x
  2. Step 2: Convert to fraction form
    495,060.73/683,066.70 = 280,200.79/x
  3. Step 3: Cross multiply
    495,060.73x = 683,066.70 × 280,200.79
  4. Step 4: Simplify right side
    495,060.73x = 191,395,830,949.59
  5. Step 5: Solve for x
    x = 191,395,830,949.59/495,060.73
  6. Step 6: Final answer
    x = 386,610.81

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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.