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Finding the Fourth Proportional to 247,392.35, 341,433.59 and 138,538.13

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Solution

The fourth proportional to 247,392.35, 341,433.59 and 138,538.13 is: 191,200.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,392.35 : 341,433.59 = 138,538.13 : x
  2. Step 2: Convert to fraction form
    247,392.35/341,433.59 = 138,538.13/x
  3. Step 3: Cross multiply
    247,392.35x = 341,433.59 × 138,538.13
  4. Step 4: Simplify right side
    247,392.35x = 47,301,571,077.79
  5. Step 5: Solve for x
    x = 47,301,571,077.79/247,392.35
  6. Step 6: Final answer
    x = 191,200.62

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1.5x scale

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.