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Finding the Fourth Proportional to 253,063.72, 349,217.13 and 138,340.24

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Solution

The fourth proportional to 253,063.72, 349,217.13 and 138,340.24 is: 190,903.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,063.72 : 349,217.13 = 138,340.24 : x
  2. Step 2: Convert to fraction form
    253,063.72/349,217.13 = 138,340.24/x
  3. Step 3: Cross multiply
    253,063.72x = 349,217.13 × 138,340.24
  4. Step 4: Simplify right side
    253,063.72x = 48,310,781,576.31
  5. Step 5: Solve for x
    x = 48,310,781,576.31/253,063.72
  6. Step 6: Final answer
    x = 190,903.63

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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.