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Finding the Fourth Proportional to 289,079.20, 433,273.20 and 148,765.60

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Solution

The fourth proportional to 289,079.20, 433,273.20 and 148,765.60 is: 222,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,079.20 : 433,273.20 = 148,765.60 : x
  2. Step 2: Convert to fraction form
    289,079.20/433,273.20 = 148,765.60/x
  3. Step 3: Cross multiply
    289,079.20x = 433,273.20 × 148,765.60
  4. Step 4: Simplify right side
    289,079.20x = 64,456,147,561.92
  5. Step 5: Solve for x
    x = 64,456,147,561.92/289,079.20
  6. Step 6: Final answer
    x = 222,970.55

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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.