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Finding the Fourth Proportional to 225,463.87, 311,143.51 and 123,498.73

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Solution

The fourth proportional to 225,463.87, 311,143.51 and 123,498.73 is: 170,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,463.87 : 311,143.51 = 123,498.73 : x
  2. Step 2: Convert to fraction form
    225,463.87/311,143.51 = 123,498.73/x
  3. Step 3: Cross multiply
    225,463.87x = 311,143.51 × 123,498.73
  4. Step 4: Simplify right side
    225,463.87x = 38,425,828,332.74
  5. Step 5: Solve for x
    x = 38,425,828,332.74/225,463.87
  6. Step 6: Final answer
    x = 170,430.09

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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.