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Finding the Fourth Proportional to 374,449.20, 561,673.80 and 285,875.70

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Solution

The fourth proportional to 374,449.20, 561,673.80 and 285,875.70 is: 428,813.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,449.20 : 561,673.80 = 285,875.70 : x
  2. Step 2: Convert to fraction form
    374,449.20/561,673.80 = 285,875.70/x
  3. Step 3: Cross multiply
    374,449.20x = 561,673.80 × 285,875.70
  4. Step 4: Simplify right side
    374,449.20x = 160,568,890,746.66
  5. Step 5: Solve for x
    x = 160,568,890,746.66/374,449.20
  6. Step 6: Final answer
    x = 428,813.55

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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.