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Finding the Fourth Proportional to 288,328.39, 397,891.60 and 159,275.75

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Solution

The fourth proportional to 288,328.39, 397,891.60 and 159,275.75 is: 219,799.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,328.39 : 397,891.60 = 159,275.75 : x
  2. Step 2: Convert to fraction form
    288,328.39/397,891.60 = 159,275.75/x
  3. Step 3: Cross multiply
    288,328.39x = 397,891.60 × 159,275.75
  4. Step 4: Simplify right side
    288,328.39x = 63,374,482,859.19
  5. Step 5: Solve for x
    x = 63,374,482,859.19/288,328.39
  6. Step 6: Final answer
    x = 219,799.66

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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.