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Finding the Fourth Proportional to 253,515.71, 349,851.78 and 138,801.79

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Solution

The fourth proportional to 253,515.71, 349,851.78 and 138,801.79 is: 191,546.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,515.71 : 349,851.78 = 138,801.79 : x
  2. Step 2: Convert to fraction form
    253,515.71/349,851.78 = 138,801.79/x
  3. Step 3: Cross multiply
    253,515.71x = 349,851.78 × 138,801.79
  4. Step 4: Simplify right side
    253,515.71x = 48,560,050,855.42
  5. Step 5: Solve for x
    x = 48,560,050,855.42/253,515.71
  6. Step 6: Final answer
    x = 191,546.52

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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.