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Finding the Fourth Proportional to 290,911.59, 436,366.67 and 80,548.83

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Solution

The fourth proportional to 290,911.59, 436,366.67 and 80,548.83 is: 120,823.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,911.59 : 436,366.67 = 80,548.83 : x
  2. Step 2: Convert to fraction form
    290,911.59/436,366.67 = 80,548.83/x
  3. Step 3: Cross multiply
    290,911.59x = 436,366.67 × 80,548.83
  4. Step 4: Simplify right side
    290,911.59x = 35,148,824,316.75
  5. Step 5: Solve for x
    x = 35,148,824,316.75/290,911.59
  6. Step 6: Final answer
    x = 120,823.05

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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.