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Finding the Fourth Proportional to 207,123.72, 310,230.09 and 171,177.72

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Solution

The fourth proportional to 207,123.72, 310,230.09 and 171,177.72 is: 256,390.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,123.72 : 310,230.09 = 171,177.72 : x
  2. Step 2: Convert to fraction form
    207,123.72/310,230.09 = 171,177.72/x
  3. Step 3: Cross multiply
    207,123.72x = 310,230.09 × 171,177.72
  4. Step 4: Simplify right side
    207,123.72x = 53,104,479,481.59
  5. Step 5: Solve for x
    x = 53,104,479,481.59/207,123.72
  6. Step 6: Final answer
    x = 256,390.14

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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.