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Finding the Fourth Proportional to 292,327.20, 438,490.80 and 82,000.80

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Solution

The fourth proportional to 292,327.20, 438,490.80 and 82,000.80 is: 123,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,327.20 : 438,490.80 = 82,000.80 : x
  2. Step 2: Convert to fraction form
    292,327.20/438,490.80 = 82,000.80/x
  3. Step 3: Cross multiply
    292,327.20x = 438,490.80 × 82,000.80
  4. Step 4: Simplify right side
    292,327.20x = 35,956,596,392.64
  5. Step 5: Solve for x
    x = 35,956,596,392.64/292,327.20
  6. Step 6: Final answer
    x = 123,001.20

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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.