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Finding the Fourth Proportional to 258,164.92, 387,006.62 and 87,267.72

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Solution

The fourth proportional to 258,164.92, 387,006.62 and 87,267.72 is: 130,820.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,164.92 : 387,006.62 = 87,267.72 : x
  2. Step 2: Convert to fraction form
    258,164.92/387,006.62 = 87,267.72/x
  3. Step 3: Cross multiply
    258,164.92x = 387,006.62 × 87,267.72
  4. Step 4: Simplify right side
    258,164.92x = 33,773,185,352.31
  5. Step 5: Solve for x
    x = 33,773,185,352.31/258,164.92
  6. Step 6: Final answer
    x = 130,820.20

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1.5x scale

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.