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Finding the Fourth Proportional to 153,385, 211,669.30 and 88,863.04

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Solution

The fourth proportional to 153,385, 211,669.30 and 88,863.04 is: 122,629.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,385 : 211,669.30 = 88,863.04 : x
  2. Step 2: Convert to fraction form
    153,385/211,669.30 = 88,863.04/x
  3. Step 3: Cross multiply
    153,385x = 211,669.30 × 88,863.04
  4. Step 4: Simplify right side
    153,385x = 18,809,577,472.67
  5. Step 5: Solve for x
    x = 18,809,577,472.67/153,385
  6. Step 6: Final answer
    x = 122,629.84

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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.