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Finding the Fourth Proportional to 252,402.45, 378,521.79 and 83,877.49

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Solution

The fourth proportional to 252,402.45, 378,521.79 and 83,877.49 is: 125,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,402.45 : 378,521.79 = 83,877.49 : x
  2. Step 2: Convert to fraction form
    252,402.45/378,521.79 = 83,877.49/x
  3. Step 3: Cross multiply
    252,402.45x = 378,521.79 × 83,877.49
  4. Step 4: Simplify right side
    252,402.45x = 31,749,457,655.51
  5. Step 5: Solve for x
    x = 31,749,457,655.51/252,402.45
  6. Step 6: Final answer
    x = 125,789.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.