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Finding the Fourth Proportional to 215,419.65, 323,177.45 and 65,671.59

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Solution

The fourth proportional to 215,419.65, 323,177.45 and 65,671.59 is: 98,522.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,419.65 : 323,177.45 = 65,671.59 : x
  2. Step 2: Convert to fraction form
    215,419.65/323,177.45 = 65,671.59/x
  3. Step 3: Cross multiply
    215,419.65x = 323,177.45 × 65,671.59
  4. Step 4: Simplify right side
    215,419.65x = 21,223,575,150.39
  5. Step 5: Solve for x
    x = 21,223,575,150.39/215,419.65
  6. Step 6: Final answer
    x = 98,522.00

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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.