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Finding the Fourth Proportional to 292,998.40, 439,497.60 and 272,003.20

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Solution

The fourth proportional to 292,998.40, 439,497.60 and 272,003.20 is: 408,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,998.40 : 439,497.60 = 272,003.20 : x
  2. Step 2: Convert to fraction form
    292,998.40/439,497.60 = 272,003.20/x
  3. Step 3: Cross multiply
    292,998.40x = 439,497.60 × 272,003.20
  4. Step 4: Simplify right side
    292,998.40x = 119,544,753,592.32
  5. Step 5: Solve for x
    x = 119,544,753,592.32/292,998.40
  6. Step 6: Final answer
    x = 408,004.80

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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.