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Finding the Fourth Proportional to 342,348.12, 513,327.78 and 286,535.88

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Solution

The fourth proportional to 342,348.12, 513,327.78 and 286,535.88 is: 429,641.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,348.12 : 513,327.78 = 286,535.88 : x
  2. Step 2: Convert to fraction form
    342,348.12/513,327.78 = 286,535.88/x
  3. Step 3: Cross multiply
    342,348.12x = 513,327.78 × 286,535.88
  4. Step 4: Simplify right side
    342,348.12x = 147,086,827,170.75
  5. Step 5: Solve for x
    x = 147,086,827,170.75/342,348.12
  6. Step 6: Final answer
    x = 429,641.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.