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Finding the Fourth Proportional to 260,073.90, 390,223.54 and 91,714.52

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Solution

The fourth proportional to 260,073.90, 390,223.54 and 91,714.52 is: 137,611.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,073.90 : 390,223.54 = 91,714.52 : x
  2. Step 2: Convert to fraction form
    260,073.90/390,223.54 = 91,714.52/x
  3. Step 3: Cross multiply
    260,073.90x = 390,223.54 × 91,714.52
  4. Step 4: Simplify right side
    260,073.90x = 35,789,164,663.80
  5. Step 5: Solve for x
    x = 35,789,164,663.80/260,073.90
  6. Step 6: Final answer
    x = 137,611.52

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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.