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Finding the Fourth Proportional to 288,697.26, 398,386.08 and 159,628.25

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Solution

The fourth proportional to 288,697.26, 398,386.08 and 159,628.25 is: 220,278.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,697.26 : 398,386.08 = 159,628.25 : x
  2. Step 2: Convert to fraction form
    288,697.26/398,386.08 = 159,628.25/x
  3. Step 3: Cross multiply
    288,697.26x = 398,386.08 × 159,628.25
  4. Step 4: Simplify right side
    288,697.26x = 63,593,673,770.73
  5. Step 5: Solve for x
    x = 63,593,673,770.73/288,697.26
  6. Step 6: Final answer
    x = 220,278.06

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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.