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Finding the Fourth Proportional to 495,352.54, 683,589.13 and 280,534.42

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Solution

The fourth proportional to 495,352.54, 683,589.13 and 280,534.42 is: 387,138.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,352.54 : 683,589.13 = 280,534.42 : x
  2. Step 2: Convert to fraction form
    495,352.54/683,589.13 = 280,534.42/x
  3. Step 3: Cross multiply
    495,352.54x = 683,589.13 × 280,534.42
  4. Step 4: Simplify right side
    495,352.54x = 191,770,280,102.86
  5. Step 5: Solve for x
    x = 191,770,280,102.86/495,352.54
  6. Step 6: Final answer
    x = 387,138.99

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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.