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Finding the Fourth Proportional to 208,809.04, 288,156.66 and 113,315.74

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Solution

The fourth proportional to 208,809.04, 288,156.66 and 113,315.74 is: 156,375.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,809.04 : 288,156.66 = 113,315.74 : x
  2. Step 2: Convert to fraction form
    208,809.04/288,156.66 = 113,315.74/x
  3. Step 3: Cross multiply
    208,809.04x = 288,156.66 × 113,315.74
  4. Step 4: Simplify right side
    208,809.04x = 32,652,685,163.83
  5. Step 5: Solve for x
    x = 32,652,685,163.83/208,809.04
  6. Step 6: Final answer
    x = 156,375.82

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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.