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Finding the Fourth Proportional to 361,971.20, 542,956.80 and 303,359.60

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Solution

The fourth proportional to 361,971.20, 542,956.80 and 303,359.60 is: 455,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,971.20 : 542,956.80 = 303,359.60 : x
  2. Step 2: Convert to fraction form
    361,971.20/542,956.80 = 303,359.60/x
  3. Step 3: Cross multiply
    361,971.20x = 542,956.80 × 303,359.60
  4. Step 4: Simplify right side
    361,971.20x = 164,711,157,665.28
  5. Step 5: Solve for x
    x = 164,711,157,665.28/361,971.20
  6. Step 6: Final answer
    x = 455,039.40

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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.