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Finding the Fourth Proportional to 290,696.90, 436,108.22 and 88,276.37

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Solution

The fourth proportional to 290,696.90, 436,108.22 and 88,276.37 is: 132,433.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,696.90 : 436,108.22 = 88,276.37 : x
  2. Step 2: Convert to fraction form
    290,696.90/436,108.22 = 88,276.37/x
  3. Step 3: Cross multiply
    290,696.90x = 436,108.22 × 88,276.37
  4. Step 4: Simplify right side
    290,696.90x = 38,498,047,966.84
  5. Step 5: Solve for x
    x = 38,498,047,966.84/290,696.90
  6. Step 6: Final answer
    x = 132,433.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.