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Finding the Fourth Proportional to 288,983.05, 398,778.26 and 158,134.16

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Solution

The fourth proportional to 288,983.05, 398,778.26 and 158,134.16 is: 218,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,983.05 : 398,778.26 = 158,134.16 : x
  2. Step 2: Convert to fraction form
    288,983.05/398,778.26 = 158,134.16/x
  3. Step 3: Cross multiply
    288,983.05x = 398,778.26 × 158,134.16
  4. Step 4: Simplify right side
    288,983.05x = 63,060,465,377.64
  5. Step 5: Solve for x
    x = 63,060,465,377.64/288,983.05
  6. Step 6: Final answer
    x = 218,215.10

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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.