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Finding the Fourth Proportional to 230,961.70, 346,248.15 and 120,153.70

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Solution

The fourth proportional to 230,961.70, 346,248.15 and 120,153.70 is: 180,129.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,961.70 : 346,248.15 = 120,153.70 : x
  2. Step 2: Convert to fraction form
    230,961.70/346,248.15 = 120,153.70/x
  3. Step 3: Cross multiply
    230,961.70x = 346,248.15 × 120,153.70
  4. Step 4: Simplify right side
    230,961.70x = 41,602,996,340.66
  5. Step 5: Solve for x
    x = 41,602,996,340.66/230,961.70
  6. Step 6: Final answer
    x = 180,129.42

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1.5x scale

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.