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Finding the Fourth Proportional to 268,270.40, 401,944.80 and 127,726.40

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Solution

The fourth proportional to 268,270.40, 401,944.80 and 127,726.40 is: 191,370.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,270.40 : 401,944.80 = 127,726.40 : x
  2. Step 2: Convert to fraction form
    268,270.40/401,944.80 = 127,726.40/x
  3. Step 3: Cross multiply
    268,270.40x = 401,944.80 × 127,726.40
  4. Step 4: Simplify right side
    268,270.40x = 51,338,962,302.72
  5. Step 5: Solve for x
    x = 51,338,962,302.72/268,270.40
  6. Step 6: Final answer
    x = 191,370.21

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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.