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Finding the Fourth Proportional to 202,115.20, 303,422.40 and 127,235.20

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Solution

The fourth proportional to 202,115.20, 303,422.40 and 127,235.20 is: 191,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,115.20 : 303,422.40 = 127,235.20 : x
  2. Step 2: Convert to fraction form
    202,115.20/303,422.40 = 127,235.20/x
  3. Step 3: Cross multiply
    202,115.20x = 303,422.40 × 127,235.20
  4. Step 4: Simplify right side
    202,115.20x = 38,606,009,748.48
  5. Step 5: Solve for x
    x = 38,606,009,748.48/202,115.20
  6. Step 6: Final answer
    x = 191,009.93

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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.