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Finding the Fourth Proportional to 247,881.75, 342,105.98 and 147,279.75

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Solution

The fourth proportional to 247,881.75, 342,105.98 and 147,279.75 is: 203,263.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,881.75 : 342,105.98 = 147,279.75 : x
  2. Step 2: Convert to fraction form
    247,881.75/342,105.98 = 147,279.75/x
  3. Step 3: Cross multiply
    247,881.75x = 342,105.98 × 147,279.75
  4. Step 4: Simplify right side
    247,881.75x = 50,385,282,471.51
  5. Step 5: Solve for x
    x = 50,385,282,471.51/247,881.75
  6. Step 6: Final answer
    x = 203,263.38

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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.