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Finding the Fourth Proportional to 253,089.39, 349,272.68 and 138,375.67

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Solution

The fourth proportional to 253,089.39, 349,272.68 and 138,375.67 is: 190,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,089.39 : 349,272.68 = 138,375.67 : x
  2. Step 2: Convert to fraction form
    253,089.39/349,272.68 = 138,375.67/x
  3. Step 3: Cross multiply
    253,089.39x = 349,272.68 × 138,375.67
  4. Step 4: Simplify right side
    253,089.39x = 48,330,839,542.64
  5. Step 5: Solve for x
    x = 48,330,839,542.64/253,089.39
  6. Step 6: Final answer
    x = 190,963.52

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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.