Home / 428,909.20-591,965.68-237,984.12

Finding the Fourth Proportional to 428,909.20, 591,965.68 and 237,984.12

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Solution

The fourth proportional to 428,909.20, 591,965.68 and 237,984.12 is: 328,457.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,909.20 : 591,965.68 = 237,984.12 : x
  2. Step 2: Convert to fraction form
    428,909.20/591,965.68 = 237,984.12/x
  3. Step 3: Cross multiply
    428,909.20x = 591,965.68 × 237,984.12
  4. Step 4: Simplify right side
    428,909.20x = 140,878,431,425.00
  5. Step 5: Solve for x
    x = 140,878,431,425.00/428,909.20
  6. Step 6: Final answer
    x = 328,457.47

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1.5x scale

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.