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Finding the Fourth Proportional to 247,649.35, 341,736.75 and 145,678.65

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Solution

The fourth proportional to 247,649.35, 341,736.75 and 145,678.65 is: 201,025.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,649.35 : 341,736.75 = 145,678.65 : x
  2. Step 2: Convert to fraction form
    247,649.35/341,736.75 = 145,678.65/x
  3. Step 3: Cross multiply
    247,649.35x = 341,736.75 × 145,678.65
  4. Step 4: Simplify right side
    247,649.35x = 49,783,748,626.42
  5. Step 5: Solve for x
    x = 49,783,748,626.42/247,649.35
  6. Step 6: Final answer
    x = 201,025.15

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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.