Home / 420,127.20-579,772.08-229,145.76

Finding the Fourth Proportional to 420,127.20, 579,772.08 and 229,145.76

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Solution

The fourth proportional to 420,127.20, 579,772.08 and 229,145.76 is: 316,219.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,127.20 : 579,772.08 = 229,145.76 : x
  2. Step 2: Convert to fraction form
    420,127.20/579,772.08 = 229,145.76/x
  3. Step 3: Cross multiply
    420,127.20x = 579,772.08 × 229,145.76
  4. Step 4: Simplify right side
    420,127.20x = 132,852,313,898.38
  5. Step 5: Solve for x
    x = 132,852,313,898.38/420,127.20
  6. Step 6: Final answer
    x = 316,219.26

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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.