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Finding the Fourth Proportional to 258,176.40, 387,254.08 and 89,734.96

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Solution

The fourth proportional to 258,176.40, 387,254.08 and 89,734.96 is: 134,598.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,176.40 : 387,254.08 = 89,734.96 : x
  2. Step 2: Convert to fraction form
    258,176.40/387,254.08 = 89,734.96/x
  3. Step 3: Cross multiply
    258,176.40x = 387,254.08 × 89,734.96
  4. Step 4: Simplify right side
    258,176.40x = 34,750,229,378.64
  5. Step 5: Solve for x
    x = 34,750,229,378.64/258,176.40
  6. Step 6: Final answer
    x = 134,598.78

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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.