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Finding the Fourth Proportional to 253,218.22, 349,427.01 and 138,474.22

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Solution

The fourth proportional to 253,218.22, 349,427.01 and 138,474.22 is: 191,086.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,218.22 : 349,427.01 = 138,474.22 : x
  2. Step 2: Convert to fraction form
    253,218.22/349,427.01 = 138,474.22/x
  3. Step 3: Cross multiply
    253,218.22x = 349,427.01 × 138,474.22
  4. Step 4: Simplify right side
    253,218.22x = 48,386,632,656.68
  5. Step 5: Solve for x
    x = 48,386,632,656.68/253,218.22
  6. Step 6: Final answer
    x = 191,086.69

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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.