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Finding the Fourth Proportional to 288,019.35, 397,489.05 and 158,983.11

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Solution

The fourth proportional to 288,019.35, 397,489.05 and 158,983.11 is: 219,409.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,019.35 : 397,489.05 = 158,983.11 : x
  2. Step 2: Convert to fraction form
    288,019.35/397,489.05 = 158,983.11/x
  3. Step 3: Cross multiply
    288,019.35x = 397,489.05 × 158,983.11
  4. Step 4: Simplify right side
    288,019.35x = 63,194,045,359.95
  5. Step 5: Solve for x
    x = 63,194,045,359.95/288,019.35
  6. Step 6: Final answer
    x = 219,409.03

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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.