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Finding the Fourth Proportional to 208,892.70, 288,272.28 and 113,399.34

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Solution

The fourth proportional to 208,892.70, 288,272.28 and 113,399.34 is: 156,491.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,892.70 : 288,272.28 = 113,399.34 : x
  2. Step 2: Convert to fraction form
    208,892.70/288,272.28 = 113,399.34/x
  3. Step 3: Cross multiply
    208,892.70x = 288,272.28 × 113,399.34
  4. Step 4: Simplify right side
    208,892.70x = 32,689,886,292.30
  5. Step 5: Solve for x
    x = 32,689,886,292.30/208,892.70
  6. Step 6: Final answer
    x = 156,491.28

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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.