Home / 420,139.31-579,799.16-229,152.70

Finding the Fourth Proportional to 420,139.31, 579,799.16 and 229,152.70

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Solution

The fourth proportional to 420,139.31, 579,799.16 and 229,152.70 is: 316,234.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,139.31 : 579,799.16 = 229,152.70 : x
  2. Step 2: Convert to fraction form
    420,139.31/579,799.16 = 229,152.70/x
  3. Step 3: Cross multiply
    420,139.31x = 579,799.16 × 229,152.70
  4. Step 4: Simplify right side
    420,139.31x = 132,862,546,329.71
  5. Step 5: Solve for x
    x = 132,862,546,329.71/420,139.31
  6. Step 6: Final answer
    x = 316,234.50

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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.