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Finding the Fourth Proportional to 260,508.64, 390,755.66 and 83,026.30

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Solution

The fourth proportional to 260,508.64, 390,755.66 and 83,026.30 is: 124,537.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,508.64 : 390,755.66 = 83,026.30 : x
  2. Step 2: Convert to fraction form
    260,508.64/390,755.66 = 83,026.30/x
  3. Step 3: Cross multiply
    260,508.64x = 390,755.66 × 83,026.30
  4. Step 4: Simplify right side
    260,508.64x = 32,442,996,653.86
  5. Step 5: Solve for x
    x = 32,442,996,653.86/260,508.64
  6. Step 6: Final answer
    x = 124,537.12

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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.