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Finding the Fourth Proportional to 232,652.80, 348,979.20 and 66,419.20

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Solution

The fourth proportional to 232,652.80, 348,979.20 and 66,419.20 is: 99,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    232,652.80 : 348,979.20 = 66,419.20 : x
  2. Step 2: Convert to fraction form
    232,652.80/348,979.20 = 66,419.20/x
  3. Step 3: Cross multiply
    232,652.80x = 348,979.20 × 66,419.20
  4. Step 4: Simplify right side
    232,652.80x = 23,178,919,280.64
  5. Step 5: Solve for x
    x = 23,178,919,280.64/232,652.80
  6. Step 6: Final answer
    x = 99,628.80

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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.