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Finding the Fourth Proportional to 495,312.52, 683,538.60 and 280,446.52

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Solution

The fourth proportional to 495,312.52, 683,538.60 and 280,446.52 is: 387,020.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,312.52 : 683,538.60 = 280,446.52 : x
  2. Step 2: Convert to fraction form
    495,312.52/683,538.60 = 280,446.52/x
  3. Step 3: Cross multiply
    495,312.52x = 683,538.60 × 280,446.52
  4. Step 4: Simplify right side
    495,312.52x = 191,696,021,655.67
  5. Step 5: Solve for x
    x = 191,696,021,655.67/495,312.52
  6. Step 6: Final answer
    x = 387,020.34

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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.