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Finding the Fourth Proportional to 234,468.78, 351,631.34 and 84,690.60

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Solution

The fourth proportional to 234,468.78, 351,631.34 and 84,690.60 is: 127,009.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,468.78 : 351,631.34 = 84,690.60 : x
  2. Step 2: Convert to fraction form
    234,468.78/351,631.34 = 84,690.60/x
  3. Step 3: Cross multiply
    234,468.78x = 351,631.34 × 84,690.60
  4. Step 4: Simplify right side
    234,468.78x = 29,779,869,163.40
  5. Step 5: Solve for x
    x = 29,779,869,163.40/234,468.78
  6. Step 6: Final answer
    x = 127,009.95

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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.