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Finding the Fourth Proportional to 252,021.60, 378,064.80 and 125,726.40

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Solution

The fourth proportional to 252,021.60, 378,064.80 and 125,726.40 is: 188,605.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,021.60 : 378,064.80 = 125,726.40 : x
  2. Step 2: Convert to fraction form
    252,021.60/378,064.80 = 125,726.40/x
  3. Step 3: Cross multiply
    252,021.60x = 378,064.80 × 125,726.40
  4. Step 4: Simplify right side
    252,021.60x = 47,532,726,270.72
  5. Step 5: Solve for x
    x = 47,532,726,270.72/252,021.60
  6. Step 6: Final answer
    x = 188,605.76

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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.