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Finding the Fourth Proportional to 225,370.99, 311,002.34 and 123,394.59

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Solution

The fourth proportional to 225,370.99, 311,002.34 and 123,394.59 is: 170,279.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,370.99 : 311,002.34 = 123,394.59 : x
  2. Step 2: Convert to fraction form
    225,370.99/311,002.34 = 123,394.59/x
  3. Step 3: Cross multiply
    225,370.99x = 311,002.34 × 123,394.59
  4. Step 4: Simplify right side
    225,370.99x = 38,376,006,541.83
  5. Step 5: Solve for x
    x = 38,376,006,541.83/225,370.99
  6. Step 6: Final answer
    x = 170,279.27

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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.