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Finding the Fourth Proportional to 226,117.50, 312,045.80 and 125,515.50

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Solution

The fourth proportional to 226,117.50, 312,045.80 and 125,515.50 is: 173,213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,117.50 : 312,045.80 = 125,515.50 : x
  2. Step 2: Convert to fraction form
    226,117.50/312,045.80 = 125,515.50/x
  3. Step 3: Cross multiply
    226,117.50x = 312,045.80 × 125,515.50
  4. Step 4: Simplify right side
    226,117.50x = 39,166,584,609.90
  5. Step 5: Solve for x
    x = 39,166,584,609.90/226,117.50
  6. Step 6: Final answer
    x = 173,213.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.