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Finding the Fourth Proportional to 288,159.20, 397,697.28 and 160,861.28

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Solution

The fourth proportional to 288,159.20, 397,697.28 and 160,861.28 is: 222,009.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,159.20 : 397,697.28 = 160,861.28 : x
  2. Step 2: Convert to fraction form
    288,159.20/397,697.28 = 160,861.28/x
  3. Step 3: Cross multiply
    288,159.20x = 397,697.28 × 160,861.28
  4. Step 4: Simplify right side
    288,159.20x = 63,974,093,513.32
  5. Step 5: Solve for x
    x = 63,974,093,513.32/288,159.20
  6. Step 6: Final answer
    x = 222,009.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.