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Finding the Fourth Proportional to 247,763.61, 341,937.75 and 138,886.45

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Solution

The fourth proportional to 247,763.61, 341,937.75 and 138,886.45 is: 191,676.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,763.61 : 341,937.75 = 138,886.45 : x
  2. Step 2: Convert to fraction form
    247,763.61/341,937.75 = 138,886.45/x
  3. Step 3: Cross multiply
    247,763.61x = 341,937.75 × 138,886.45
  4. Step 4: Simplify right side
    247,763.61x = 47,490,519,884.47
  5. Step 5: Solve for x
    x = 47,490,519,884.47/247,763.61
  6. Step 6: Final answer
    x = 191,676.74

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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.