Home / 428,736.12-591,691.32-237,811.20

Finding the Fourth Proportional to 428,736.12, 591,691.32 and 237,811.20

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Solution

The fourth proportional to 428,736.12, 591,691.32 and 237,811.20 is: 328,199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,736.12 : 591,691.32 = 237,811.20 : x
  2. Step 2: Convert to fraction form
    428,736.12/591,691.32 = 237,811.20/x
  3. Step 3: Cross multiply
    428,736.12x = 591,691.32 × 237,811.20
  4. Step 4: Simplify right side
    428,736.12x = 140,710,822,838.78
  5. Step 5: Solve for x
    x = 140,710,822,838.78/428,736.12
  6. Step 6: Final answer
    x = 328,199.13

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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.