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Finding the Fourth Proportional to 495,209.43, 683,391.80 and 291,268.91

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Solution

The fourth proportional to 495,209.43, 683,391.80 and 291,268.91 is: 401,952.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,209.43 : 683,391.80 = 291,268.91 : x
  2. Step 2: Convert to fraction form
    495,209.43/683,391.80 = 291,268.91/x
  3. Step 3: Cross multiply
    495,209.43x = 683,391.80 × 291,268.91
  4. Step 4: Simplify right side
    495,209.43x = 199,050,787,125.59
  5. Step 5: Solve for x
    x = 199,050,787,125.59/495,209.43
  6. Step 6: Final answer
    x = 401,952.74

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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.