Home / 319,441.20-478,777.80-132,356.40

Finding the Fourth Proportional to 319,441.20, 478,777.80 and 132,356.40

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Solution

The fourth proportional to 319,441.20, 478,777.80 and 132,356.40 is: 198,375.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,441.20 : 478,777.80 = 132,356.40 : x
  2. Step 2: Convert to fraction form
    319,441.20/478,777.80 = 132,356.40/x
  3. Step 3: Cross multiply
    319,441.20x = 478,777.80 × 132,356.40
  4. Step 4: Simplify right side
    319,441.20x = 63,369,306,007.92
  5. Step 5: Solve for x
    x = 63,369,306,007.92/319,441.20
  6. Step 6: Final answer
    x = 198,375.49

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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.