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Finding the Fourth Proportional to 260,641.92, 390,995.08 and 92,127.50

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Solution

The fourth proportional to 260,641.92, 390,995.08 and 92,127.50 is: 138,202.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,641.92 : 390,995.08 = 92,127.50 : x
  2. Step 2: Convert to fraction form
    260,641.92/390,995.08 = 92,127.50/x
  3. Step 3: Cross multiply
    260,641.92x = 390,995.08 × 92,127.50
  4. Step 4: Simplify right side
    260,641.92x = 36,021,397,047.41
  5. Step 5: Solve for x
    x = 36,021,397,047.41/260,641.92
  6. Step 6: Final answer
    x = 138,202.62

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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.