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Finding the Fourth Proportional to 288,800.24, 398,384.28 and 167,928.20

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Solution

The fourth proportional to 288,800.24, 398,384.28 and 167,928.20 is: 231,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,800.24 : 398,384.28 = 167,928.20 : x
  2. Step 2: Convert to fraction form
    288,800.24/398,384.28 = 167,928.20/x
  3. Step 3: Cross multiply
    288,800.24x = 398,384.28 × 167,928.20
  4. Step 4: Simplify right side
    288,800.24x = 66,899,955,048.70
  5. Step 5: Solve for x
    x = 66,899,955,048.70/288,800.24
  6. Step 6: Final answer
    x = 231,647.85

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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.