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Finding the Fourth Proportional to 247,575.85, 371,388.95 and 85,448.80

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Solution

The fourth proportional to 247,575.85, 371,388.95 and 85,448.80 is: 128,181.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,575.85 : 371,388.95 = 85,448.80 : x
  2. Step 2: Convert to fraction form
    247,575.85/371,388.95 = 85,448.80/x
  3. Step 3: Cross multiply
    247,575.85x = 371,388.95 × 85,448.80
  4. Step 4: Simplify right side
    247,575.85x = 31,734,740,110.76
  5. Step 5: Solve for x
    x = 31,734,740,110.76/247,575.85
  6. Step 6: Final answer
    x = 128,181.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.