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Finding the Fourth Proportional to 225,174, 310,740.12 and 124,578.48

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Solution

The fourth proportional to 225,174, 310,740.12 and 124,578.48 is: 171,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,174 : 310,740.12 = 124,578.48 : x
  2. Step 2: Convert to fraction form
    225,174/310,740.12 = 124,578.48/x
  3. Step 3: Cross multiply
    225,174x = 310,740.12 × 124,578.48
  4. Step 4: Simplify right side
    225,174x = 38,711,531,824.62
  5. Step 5: Solve for x
    x = 38,711,531,824.62/225,174
  6. Step 6: Final answer
    x = 171,918.30

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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.