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Finding the Fourth Proportional to 371,966.72, 513,324.68 and 226,780.90

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Solution

The fourth proportional to 371,966.72, 513,324.68 and 226,780.90 is: 312,964.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,966.72 : 513,324.68 = 226,780.90 : x
  2. Step 2: Convert to fraction form
    371,966.72/513,324.68 = 226,780.90/x
  3. Step 3: Cross multiply
    371,966.72x = 513,324.68 × 226,780.90
  4. Step 4: Simplify right side
    371,966.72x = 116,412,232,922.61
  5. Step 5: Solve for x
    x = 116,412,232,922.61/371,966.72
  6. Step 6: Final answer
    x = 312,964.11

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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.