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Finding the Fourth Proportional to 288,659.05, 398,346.84 and 159,606.45

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Solution

The fourth proportional to 288,659.05, 398,346.84 and 159,606.45 is: 220,255.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,659.05 : 398,346.84 = 159,606.45 : x
  2. Step 2: Convert to fraction form
    288,659.05/398,346.84 = 159,606.45/x
  3. Step 3: Cross multiply
    288,659.05x = 398,346.84 × 159,606.45
  4. Step 4: Simplify right side
    288,659.05x = 63,578,725,001.12
  5. Step 5: Solve for x
    x = 63,578,725,001.12/288,659.05
  6. Step 6: Final answer
    x = 220,255.44

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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.