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Finding the Fourth Proportional to 289,391.61, 433,995.45 and 270,500.88

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Solution

The fourth proportional to 289,391.61, 433,995.45 and 270,500.88 is: 405,665.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,391.61 : 433,995.45 = 270,500.88 : x
  2. Step 2: Convert to fraction form
    289,391.61/433,995.45 = 270,500.88/x
  3. Step 3: Cross multiply
    289,391.61x = 433,995.45 × 270,500.88
  4. Step 4: Simplify right side
    289,391.61x = 117,396,151,141.00
  5. Step 5: Solve for x
    x = 117,396,151,141.00/289,391.61
  6. Step 6: Final answer
    x = 405,665.36

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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.