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Finding the Fourth Proportional to 225,330.84, 310,957.25 and 123,357.18

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Solution

The fourth proportional to 225,330.84, 310,957.25 and 123,357.18 is: 170,233.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,330.84 : 310,957.25 = 123,357.18 : x
  2. Step 2: Convert to fraction form
    225,330.84/310,957.25 = 123,357.18/x
  3. Step 3: Cross multiply
    225,330.84x = 310,957.25 × 123,357.18
  4. Step 4: Simplify right side
    225,330.84x = 38,358,808,843.77
  5. Step 5: Solve for x
    x = 38,358,808,843.77/225,330.84
  6. Step 6: Final answer
    x = 170,233.28

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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.