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Finding the Fourth Proportional to 319,775.55, 479,410.30 and 120,073.69

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Solution

The fourth proportional to 319,775.55, 479,410.30 and 120,073.69 is: 180,015.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,775.55 : 479,410.30 = 120,073.69 : x
  2. Step 2: Convert to fraction form
    319,775.55/479,410.30 = 120,073.69/x
  3. Step 3: Cross multiply
    319,775.55x = 479,410.30 × 120,073.69
  4. Step 4: Simplify right side
    319,775.55x = 57,564,563,818.95
  5. Step 5: Solve for x
    x = 57,564,563,818.95/319,775.55
  6. Step 6: Final answer
    x = 180,015.53

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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.