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Finding the Fourth Proportional to 415,234.80, 622,793.06 and 130,888.40

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Solution

The fourth proportional to 415,234.80, 622,793.06 and 130,888.40 is: 196,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,234.80 : 622,793.06 = 130,888.40 : x
  2. Step 2: Convert to fraction form
    415,234.80/622,793.06 = 130,888.40/x
  3. Step 3: Cross multiply
    415,234.80x = 622,793.06 × 130,888.40
  4. Step 4: Simplify right side
    415,234.80x = 81,516,387,154.50
  5. Step 5: Solve for x
    x = 81,516,387,154.50/415,234.80
  6. Step 6: Final answer
    x = 196,313.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.