Home / 428,809.12-591,785.04-237,830.56

Finding the Fourth Proportional to 428,809.12, 591,785.04 and 237,830.56

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Solution

The fourth proportional to 428,809.12, 591,785.04 and 237,830.56 is: 328,221.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,809.12 : 591,785.04 = 237,830.56 : x
  2. Step 2: Convert to fraction form
    428,809.12/591,785.04 = 237,830.56/x
  3. Step 3: Cross multiply
    428,809.12x = 591,785.04 × 237,830.56
  4. Step 4: Simplify right side
    428,809.12x = 140,744,567,462.82
  5. Step 5: Solve for x
    x = 140,744,567,462.82/428,809.12
  6. Step 6: Final answer
    x = 328,221.95

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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.