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Finding the Fourth Proportional to 495,299.28, 683,535.96 and 280,410.96

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Solution

The fourth proportional to 495,299.28, 683,535.96 and 280,410.96 is: 386,980.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,299.28 : 683,535.96 = 280,410.96 : x
  2. Step 2: Convert to fraction form
    495,299.28/683,535.96 = 280,410.96/x
  3. Step 3: Cross multiply
    495,299.28x = 683,535.96 × 280,410.96
  4. Step 4: Simplify right side
    495,299.28x = 191,670,974,738.12
  5. Step 5: Solve for x
    x = 191,670,974,738.12/495,299.28
  6. Step 6: Final answer
    x = 386,980.12

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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.