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Finding the Fourth Proportional to 231,196.80, 346,795.20 and 120,374.40

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Solution

The fourth proportional to 231,196.80, 346,795.20 and 120,374.40 is: 180,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,196.80 : 346,795.20 = 120,374.40 : x
  2. Step 2: Convert to fraction form
    231,196.80/346,795.20 = 120,374.40/x
  3. Step 3: Cross multiply
    231,196.80x = 346,795.20 × 120,374.40
  4. Step 4: Simplify right side
    231,196.80x = 41,745,264,122.88
  5. Step 5: Solve for x
    x = 41,745,264,122.88/231,196.80
  6. Step 6: Final answer
    x = 180,561.60

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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.