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Finding the Fourth Proportional to 581,108.60, 871,490.10 and 225,918.20

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Solution

The fourth proportional to 581,108.60, 871,490.10 and 225,918.20 is: 338,810.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,108.60 : 871,490.10 = 225,918.20 : x
  2. Step 2: Convert to fraction form
    581,108.60/871,490.10 = 225,918.20/x
  3. Step 3: Cross multiply
    581,108.60x = 871,490.10 × 225,918.20
  4. Step 4: Simplify right side
    581,108.60x = 196,885,474,709.82
  5. Step 5: Solve for x
    x = 196,885,474,709.82/581,108.60
  6. Step 6: Final answer
    x = 338,810.12

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Double scale
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Similar ratio
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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.