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Finding the Fourth Proportional to 240,189.55, 331,455.80 and 131,289

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Solution

The fourth proportional to 240,189.55, 331,455.80 and 131,289 is: 181,175.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,189.55 : 331,455.80 = 131,289 : x
  2. Step 2: Convert to fraction form
    240,189.55/331,455.80 = 131,289/x
  3. Step 3: Cross multiply
    240,189.55x = 331,455.80 × 131,289
  4. Step 4: Simplify right side
    240,189.55x = 43,516,500,526.20
  5. Step 5: Solve for x
    x = 43,516,500,526.20/240,189.55
  6. Step 6: Final answer
    x = 181,175.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.