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Finding the Fourth Proportional to 258,257.59, 387,164.52 and 89,756.02

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Solution

The fourth proportional to 258,257.59, 387,164.52 and 89,756.02 is: 134,556.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,257.59 : 387,164.52 = 89,756.02 : x
  2. Step 2: Convert to fraction form
    258,257.59/387,164.52 = 89,756.02/x
  3. Step 3: Cross multiply
    258,257.59x = 387,164.52 × 89,756.02
  4. Step 4: Simplify right side
    258,257.59x = 34,750,346,400.41
  5. Step 5: Solve for x
    x = 34,750,346,400.41/258,257.59
  6. Step 6: Final answer
    x = 134,556.92

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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.