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Finding the Fourth Proportional to 206,360.40, 309,488.64 and 79,957.26

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Solution

The fourth proportional to 206,360.40, 309,488.64 and 79,957.26 is: 119,915.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,360.40 : 309,488.64 = 79,957.26 : x
  2. Step 2: Convert to fraction form
    206,360.40/309,488.64 = 79,957.26/x
  3. Step 3: Cross multiply
    206,360.40x = 309,488.64 × 79,957.26
  4. Step 4: Simplify right side
    206,360.40x = 24,745,863,655.53
  5. Step 5: Solve for x
    x = 24,745,863,655.53/206,360.40
  6. Step 6: Final answer
    x = 119,915.76

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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.