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Finding the Fourth Proportional to 260,301.60, 390,514.77 and 89,520.39

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Solution

The fourth proportional to 260,301.60, 390,514.77 and 89,520.39 is: 134,302.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,301.60 : 390,514.77 = 89,520.39 : x
  2. Step 2: Convert to fraction form
    260,301.60/390,514.77 = 89,520.39/x
  3. Step 3: Cross multiply
    260,301.60x = 390,514.77 × 89,520.39
  4. Step 4: Simplify right side
    260,301.60x = 34,959,034,511.16
  5. Step 5: Solve for x
    x = 34,959,034,511.16/260,301.60
  6. Step 6: Final answer
    x = 134,302.03

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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.