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Finding the Fourth Proportional to 261,043.60, 391,565.40 and 229,939.60

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Solution

The fourth proportional to 261,043.60, 391,565.40 and 229,939.60 is: 344,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,043.60 : 391,565.40 = 229,939.60 : x
  2. Step 2: Convert to fraction form
    261,043.60/391,565.40 = 229,939.60/x
  3. Step 3: Cross multiply
    261,043.60x = 391,565.40 × 229,939.60
  4. Step 4: Simplify right side
    261,043.60x = 90,036,391,449.84
  5. Step 5: Solve for x
    x = 90,036,391,449.84/261,043.60
  6. Step 6: Final answer
    x = 344,909.40

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1.5x scale

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.