Home / 420,681.42-580,539.96-229,694.76

Finding the Fourth Proportional to 420,681.42, 580,539.96 and 229,694.76

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Solution

The fourth proportional to 420,681.42, 580,539.96 and 229,694.76 is: 316,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,681.42 : 580,539.96 = 229,694.76 : x
  2. Step 2: Convert to fraction form
    420,681.42/580,539.96 = 229,694.76/x
  3. Step 3: Cross multiply
    420,681.42x = 580,539.96 × 229,694.76
  4. Step 4: Simplify right side
    420,681.42x = 133,346,986,782.61
  5. Step 5: Solve for x
    x = 133,346,986,782.61/420,681.42
  6. Step 6: Final answer
    x = 316,978.55

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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.