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Finding the Fourth Proportional to 253,705.26, 350,113.69 and 138,981.40

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Solution

The fourth proportional to 253,705.26, 350,113.69 and 138,981.40 is: 191,794.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,705.26 : 350,113.69 = 138,981.40 : x
  2. Step 2: Convert to fraction form
    253,705.26/350,113.69 = 138,981.40/x
  3. Step 3: Cross multiply
    253,705.26x = 350,113.69 × 138,981.40
  4. Step 4: Simplify right side
    253,705.26x = 48,659,290,093.81
  5. Step 5: Solve for x
    x = 48,659,290,093.81/253,705.26
  6. Step 6: Final answer
    x = 191,794.56

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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.