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Finding the Fourth Proportional to 368,441.60, 551,350.20 and 255,592.40

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Solution

The fourth proportional to 368,441.60, 551,350.20 and 255,592.40 is: 382,478.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,441.60 : 551,350.20 = 255,592.40 : x
  2. Step 2: Convert to fraction form
    368,441.60/551,350.20 = 255,592.40/x
  3. Step 3: Cross multiply
    368,441.60x = 551,350.20 × 255,592.40
  4. Step 4: Simplify right side
    368,441.60x = 140,920,920,858.48
  5. Step 5: Solve for x
    x = 140,920,920,858.48/368,441.60
  6. Step 6: Final answer
    x = 382,478.31

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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.