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Finding the Fourth Proportional to 292,989.64, 439,497.24 and 143,355.92

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Solution

The fourth proportional to 292,989.64, 439,497.24 and 143,355.92 is: 215,040.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,989.64 : 439,497.24 = 143,355.92 : x
  2. Step 2: Convert to fraction form
    292,989.64/439,497.24 = 143,355.92/x
  3. Step 3: Cross multiply
    292,989.64x = 439,497.24 × 143,355.92
  4. Step 4: Simplify right side
    292,989.64x = 63,004,531,177.66
  5. Step 5: Solve for x
    x = 63,004,531,177.66/292,989.64
  6. Step 6: Final answer
    x = 215,040.13

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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.