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Finding the Fourth Proportional to 292,520.78, 438,797.58 and 82,142.32

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Solution

The fourth proportional to 292,520.78, 438,797.58 and 82,142.32 is: 123,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,520.78 : 438,797.58 = 82,142.32 : x
  2. Step 2: Convert to fraction form
    292,520.78/438,797.58 = 82,142.32/x
  3. Step 3: Cross multiply
    292,520.78x = 438,797.58 × 82,142.32
  4. Step 4: Simplify right side
    292,520.78x = 36,043,849,037.60
  5. Step 5: Solve for x
    x = 36,043,849,037.60/292,520.78
  6. Step 6: Final answer
    x = 123,218.08

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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.