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Finding the Fourth Proportional to 208,855.01, 288,212.19 and 113,359.65

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Solution

The fourth proportional to 208,855.01, 288,212.19 and 113,359.65 is: 156,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,855.01 : 288,212.19 = 113,359.65 : x
  2. Step 2: Convert to fraction form
    208,855.01/288,212.19 = 113,359.65/x
  3. Step 3: Cross multiply
    208,855.01x = 288,212.19 × 113,359.65
  4. Step 4: Simplify right side
    208,855.01x = 32,671,633,737.08
  5. Step 5: Solve for x
    x = 32,671,633,737.08/208,855.01
  6. Step 6: Final answer
    x = 156,432.13

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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.