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Finding the Fourth Proportional to 260,079.40, 390,117.88 and 82,600.10

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Solution

The fourth proportional to 260,079.40, 390,117.88 and 82,600.10 is: 123,899.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,079.40 : 390,117.88 = 82,600.10 : x
  2. Step 2: Convert to fraction form
    260,079.40/390,117.88 = 82,600.10/x
  3. Step 3: Cross multiply
    260,079.40x = 390,117.88 × 82,600.10
  4. Step 4: Simplify right side
    260,079.40x = 32,223,773,742.70
  5. Step 5: Solve for x
    x = 32,223,773,742.70/260,079.40
  6. Step 6: Final answer
    x = 123,899.76

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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.