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Finding the Fourth Proportional to 247,856.05, 342,043.52 and 134,678.80

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Solution

The fourth proportional to 247,856.05, 342,043.52 and 134,678.80 is: 185,857.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,856.05 : 342,043.52 = 134,678.80 : x
  2. Step 2: Convert to fraction form
    247,856.05/342,043.52 = 134,678.80/x
  3. Step 3: Cross multiply
    247,856.05x = 342,043.52 × 134,678.80
  4. Step 4: Simplify right side
    247,856.05x = 46,066,010,147.98
  5. Step 5: Solve for x
    x = 46,066,010,147.98/247,856.05
  6. Step 6: Final answer
    x = 185,857.92

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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.