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Finding the Fourth Proportional to 290,143.35, 435,225.96 and 79,797.69

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Solution

The fourth proportional to 290,143.35, 435,225.96 and 79,797.69 is: 119,699.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,143.35 : 435,225.96 = 79,797.69 : x
  2. Step 2: Convert to fraction form
    290,143.35/435,225.96 = 79,797.69/x
  3. Step 3: Cross multiply
    290,143.35x = 435,225.96 × 79,797.69
  4. Step 4: Simplify right side
    290,143.35x = 34,730,026,236.03
  5. Step 5: Solve for x
    x = 34,730,026,236.03/290,143.35
  6. Step 6: Final answer
    x = 119,699.54

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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.