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Finding the Fourth Proportional to 247,855.50, 342,039.90 and 134,678.25

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Solution

The fourth proportional to 247,855.50, 342,039.90 and 134,678.25 is: 185,855.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,855.50 : 342,039.90 = 134,678.25 : x
  2. Step 2: Convert to fraction form
    247,855.50/342,039.90 = 134,678.25/x
  3. Step 3: Cross multiply
    247,855.50x = 342,039.90 × 134,678.25
  4. Step 4: Simplify right side
    247,855.50x = 46,065,335,162.18
  5. Step 5: Solve for x
    x = 46,065,335,162.18/247,855.50
  6. Step 6: Final answer
    x = 185,855.61

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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.