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Finding the Fourth Proportional to 260,046.70, 390,070.05 and 170,233.90

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Solution

The fourth proportional to 260,046.70, 390,070.05 and 170,233.90 is: 255,350.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,046.70 : 390,070.05 = 170,233.90 : x
  2. Step 2: Convert to fraction form
    260,046.70/390,070.05 = 170,233.90/x
  3. Step 3: Cross multiply
    260,046.70x = 390,070.05 × 170,233.90
  4. Step 4: Simplify right side
    260,046.70x = 66,403,145,884.70
  5. Step 5: Solve for x
    x = 66,403,145,884.70/260,046.70
  6. Step 6: Final answer
    x = 255,350.85

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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.