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Finding the Fourth Proportional to 292,754.80, 439,247.40 and 115,231.60

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Solution

The fourth proportional to 292,754.80, 439,247.40 and 115,231.60 is: 172,892.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,754.80 : 439,247.40 = 115,231.60 : x
  2. Step 2: Convert to fraction form
    292,754.80/439,247.40 = 115,231.60/x
  3. Step 3: Cross multiply
    292,754.80x = 439,247.40 × 115,231.60
  4. Step 4: Simplify right side
    292,754.80x = 50,615,180,697.84
  5. Step 5: Solve for x
    x = 50,615,180,697.84/292,754.80
  6. Step 6: Final answer
    x = 172,892.74

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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.