Home / 420,397.38-580,160.70-229,423.08

Finding the Fourth Proportional to 420,397.38, 580,160.70 and 229,423.08

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Solution

The fourth proportional to 420,397.38, 580,160.70 and 229,423.08 is: 316,610.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,397.38 : 580,160.70 = 229,423.08 : x
  2. Step 2: Convert to fraction form
    420,397.38/580,160.70 = 229,423.08/x
  3. Step 3: Cross multiply
    420,397.38x = 580,160.70 × 229,423.08
  4. Step 4: Simplify right side
    420,397.38x = 133,102,254,688.96
  5. Step 5: Solve for x
    x = 133,102,254,688.96/420,397.38
  6. Step 6: Final answer
    x = 316,610.57

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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.