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Finding the Fourth Proportional to 381,945.60, 572,918.40 and 293,644.80

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Solution

The fourth proportional to 381,945.60, 572,918.40 and 293,644.80 is: 440,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,945.60 : 572,918.40 = 293,644.80 : x
  2. Step 2: Convert to fraction form
    381,945.60/572,918.40 = 293,644.80/x
  3. Step 3: Cross multiply
    381,945.60x = 572,918.40 × 293,644.80
  4. Step 4: Simplify right side
    381,945.60x = 168,234,508,984.32
  5. Step 5: Solve for x
    x = 168,234,508,984.32/381,945.60
  6. Step 6: Final answer
    x = 440,467.20

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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.