Home / 428,539.16-591,390.70-234,964.55

Finding the Fourth Proportional to 428,539.16, 591,390.70 and 234,964.55

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Solution

The fourth proportional to 428,539.16, 591,390.70 and 234,964.55 is: 324,254.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,539.16 : 591,390.70 = 234,964.55 : x
  2. Step 2: Convert to fraction form
    428,539.16/591,390.70 = 234,964.55/x
  3. Step 3: Cross multiply
    428,539.16x = 591,390.70 × 234,964.55
  4. Step 4: Simplify right side
    428,539.16x = 138,955,849,699.69
  5. Step 5: Solve for x
    x = 138,955,849,699.69/428,539.16
  6. Step 6: Final answer
    x = 324,254.73

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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.