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Finding the Fourth Proportional to 495,169.89, 683,339.94 and 280,305.24

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Solution

The fourth proportional to 495,169.89, 683,339.94 and 280,305.24 is: 386,824.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,169.89 : 683,339.94 = 280,305.24 : x
  2. Step 2: Convert to fraction form
    495,169.89/683,339.94 = 280,305.24/x
  3. Step 3: Cross multiply
    495,169.89x = 683,339.94 × 280,305.24
  4. Step 4: Simplify right side
    495,169.89x = 191,543,765,883.29
  5. Step 5: Solve for x
    x = 191,543,765,883.29/495,169.89
  6. Step 6: Final answer
    x = 386,824.34

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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.