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Finding the Fourth Proportional to 236,499, 326,375.52 and 129,075.90

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Solution

The fourth proportional to 236,499, 326,375.52 and 129,075.90 is: 178,128.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,499 : 326,375.52 = 129,075.90 : x
  2. Step 2: Convert to fraction form
    236,499/326,375.52 = 129,075.90/x
  3. Step 3: Cross multiply
    236,499x = 326,375.52 × 129,075.90
  4. Step 4: Simplify right side
    236,499x = 42,127,213,981.97
  5. Step 5: Solve for x
    x = 42,127,213,981.97/236,499
  6. Step 6: Final answer
    x = 178,128.51

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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.