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Finding the Fourth Proportional to 218,145.85, 300,940.23 and 127,505.64

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Solution

The fourth proportional to 218,145.85, 300,940.23 and 127,505.64 is: 175,898.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,145.85 : 300,940.23 = 127,505.64 : x
  2. Step 2: Convert to fraction form
    218,145.85/300,940.23 = 127,505.64/x
  3. Step 3: Cross multiply
    218,145.85x = 300,940.23 × 127,505.64
  4. Step 4: Simplify right side
    218,145.85x = 38,371,575,123.20
  5. Step 5: Solve for x
    x = 38,371,575,123.20/218,145.85
  6. Step 6: Final answer
    x = 175,898.72

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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.