Home / 428,729.40-591,607.80-237,742.20

Finding the Fourth Proportional to 428,729.40, 591,607.80 and 237,742.20

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Solution

The fourth proportional to 428,729.40, 591,607.80 and 237,742.20 is: 328,062.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,729.40 : 591,607.80 = 237,742.20 : x
  2. Step 2: Convert to fraction form
    428,729.40/591,607.80 = 237,742.20/x
  3. Step 3: Cross multiply
    428,729.40x = 591,607.80 × 237,742.20
  4. Step 4: Simplify right side
    428,729.40x = 140,650,139,909.16
  5. Step 5: Solve for x
    x = 140,650,139,909.16/428,729.40
  6. Step 6: Final answer
    x = 328,062.74

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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.