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Finding the Fourth Proportional to 247,031.28, 340,904.36 and 133,854

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Solution

The fourth proportional to 247,031.28, 340,904.36 and 133,854 is: 184,719.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,031.28 : 340,904.36 = 133,854 : x
  2. Step 2: Convert to fraction form
    247,031.28/340,904.36 = 133,854/x
  3. Step 3: Cross multiply
    247,031.28x = 340,904.36 × 133,854
  4. Step 4: Simplify right side
    247,031.28x = 45,631,412,203.44
  5. Step 5: Solve for x
    x = 45,631,412,203.44/247,031.28
  6. Step 6: Final answer
    x = 184,719.17

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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.