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Finding the Fourth Proportional to 374,443.20, 561,664.80 and 187,819.20

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Solution

The fourth proportional to 374,443.20, 561,664.80 and 187,819.20 is: 281,728.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,443.20 : 561,664.80 = 187,819.20 : x
  2. Step 2: Convert to fraction form
    374,443.20/561,664.80 = 187,819.20/x
  3. Step 3: Cross multiply
    374,443.20x = 561,664.80 × 187,819.20
  4. Step 4: Simplify right side
    374,443.20x = 105,491,433,404.16
  5. Step 5: Solve for x
    x = 105,491,433,404.16/374,443.20
  6. Step 6: Final answer
    x = 281,728.80

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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.