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Finding the Fourth Proportional to 288,744.20, 398,455.56 and 159,674.29

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Solution

The fourth proportional to 288,744.20, 398,455.56 and 159,674.29 is: 220,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,744.20 : 398,455.56 = 159,674.29 : x
  2. Step 2: Convert to fraction form
    288,744.20/398,455.56 = 159,674.29/x
  3. Step 3: Cross multiply
    288,744.20x = 398,455.56 × 159,674.29
  4. Step 4: Simplify right side
    288,744.20x = 63,623,108,639.55
  5. Step 5: Solve for x
    x = 63,623,108,639.55/288,744.20
  6. Step 6: Final answer
    x = 220,344.20

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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.