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Finding the Fourth Proportional to 219,951.60, 329,985.45 and 86,799.48

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Solution

The fourth proportional to 219,951.60, 329,985.45 and 86,799.48 is: 130,222.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,951.60 : 329,985.45 = 86,799.48 : x
  2. Step 2: Convert to fraction form
    219,951.60/329,985.45 = 86,799.48/x
  3. Step 3: Cross multiply
    219,951.60x = 329,985.45 × 86,799.48
  4. Step 4: Simplify right side
    219,951.60x = 28,642,565,467.57
  5. Step 5: Solve for x
    x = 28,642,565,467.57/219,951.60
  6. Step 6: Final answer
    x = 130,222.13

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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.