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Finding the Fourth Proportional to 207,496.70, 286,341.55 and 126,918.30

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Solution

The fourth proportional to 207,496.70, 286,341.55 and 126,918.30 is: 175,144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,496.70 : 286,341.55 = 126,918.30 : x
  2. Step 2: Convert to fraction form
    207,496.70/286,341.55 = 126,918.30/x
  3. Step 3: Cross multiply
    207,496.70x = 286,341.55 × 126,918.30
  4. Step 4: Simplify right side
    207,496.70x = 36,341,982,745.37
  5. Step 5: Solve for x
    x = 36,341,982,745.37/207,496.70
  6. Step 6: Final answer
    x = 175,144.88

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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.