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Finding the Fourth Proportional to 438,726.92, 605,455.56 and 247,769.01

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Solution

The fourth proportional to 438,726.92, 605,455.56 and 247,769.01 is: 341,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,726.92 : 605,455.56 = 247,769.01 : x
  2. Step 2: Convert to fraction form
    438,726.92/605,455.56 = 247,769.01/x
  3. Step 3: Cross multiply
    438,726.92x = 605,455.56 × 247,769.01
  4. Step 4: Simplify right side
    438,726.92x = 150,013,124,700.20
  5. Step 5: Solve for x
    x = 150,013,124,700.20/438,726.92
  6. Step 6: Final answer
    x = 341,928.25

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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.