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Finding the Fourth Proportional to 288,674.55, 398,354.81 and 159,605.57

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Solution

The fourth proportional to 288,674.55, 398,354.81 and 159,605.57 is: 220,246.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,674.55 : 398,354.81 = 159,605.57 : x
  2. Step 2: Convert to fraction form
    288,674.55/398,354.81 = 159,605.57/x
  3. Step 3: Cross multiply
    288,674.55x = 398,354.81 × 159,605.57
  4. Step 4: Simplify right side
    288,674.55x = 63,579,643,722.49
  5. Step 5: Solve for x
    x = 63,579,643,722.49/288,674.55
  6. Step 6: Final answer
    x = 220,246.79

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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.