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Finding the Fourth Proportional to 208,655.19, 288,055.80 and 163,236.69

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Solution

The fourth proportional to 208,655.19, 288,055.80 and 163,236.69 is: 225,353.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,655.19 : 288,055.80 = 163,236.69 : x
  2. Step 2: Convert to fraction form
    208,655.19/288,055.80 = 163,236.69/x
  3. Step 3: Cross multiply
    208,655.19x = 288,055.80 × 163,236.69
  4. Step 4: Simplify right side
    208,655.19x = 47,021,275,327.30
  5. Step 5: Solve for x
    x = 47,021,275,327.30/208,655.19
  6. Step 6: Final answer
    x = 225,353.97

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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.