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Finding the Fourth Proportional to 206,978.04, 310,207.32 and 88,510.08

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Solution

The fourth proportional to 206,978.04, 310,207.32 and 88,510.08 is: 132,654.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,978.04 : 310,207.32 = 88,510.08 : x
  2. Step 2: Convert to fraction form
    206,978.04/310,207.32 = 88,510.08/x
  3. Step 3: Cross multiply
    206,978.04x = 310,207.32 × 88,510.08
  4. Step 4: Simplify right side
    206,978.04x = 27,456,474,709.79
  5. Step 5: Solve for x
    x = 27,456,474,709.79/206,978.04
  6. Step 6: Final answer
    x = 132,654.05

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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.