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Finding the Fourth Proportional to 380,257.60, 570,416.10 and 169,916.80

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Solution

The fourth proportional to 380,257.60, 570,416.10 and 169,916.80 is: 254,888.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,257.60 : 570,416.10 = 169,916.80 : x
  2. Step 2: Convert to fraction form
    380,257.60/570,416.10 = 169,916.80/x
  3. Step 3: Cross multiply
    380,257.60x = 570,416.10 × 169,916.80
  4. Step 4: Simplify right side
    380,257.60x = 96,923,278,380.48
  5. Step 5: Solve for x
    x = 96,923,278,380.48/380,257.60
  6. Step 6: Final answer
    x = 254,888.47

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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.