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Finding the Fourth Proportional to 251,292.40, 346,770.72 and 138,119.20

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Solution

The fourth proportional to 251,292.40, 346,770.72 and 138,119.20 is: 190,597.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,292.40 : 346,770.72 = 138,119.20 : x
  2. Step 2: Convert to fraction form
    251,292.40/346,770.72 = 138,119.20/x
  3. Step 3: Cross multiply
    251,292.40x = 346,770.72 × 138,119.20
  4. Step 4: Simplify right side
    251,292.40x = 47,895,694,429.82
  5. Step 5: Solve for x
    x = 47,895,694,429.82/251,292.40
  6. Step 6: Final answer
    x = 190,597.47

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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.