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Finding the Fourth Proportional to 290,807.20, 436,211.46 and 88,405.14

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Solution

The fourth proportional to 290,807.20, 436,211.46 and 88,405.14 is: 132,607.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,807.20 : 436,211.46 = 88,405.14 : x
  2. Step 2: Convert to fraction form
    290,807.20/436,211.46 = 88,405.14/x
  3. Step 3: Cross multiply
    290,807.20x = 436,211.46 × 88,405.14
  4. Step 4: Simplify right side
    290,807.20x = 38,563,335,190.90
  5. Step 5: Solve for x
    x = 38,563,335,190.90/290,807.20
  6. Step 6: Final answer
    x = 132,607.91

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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.