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Finding the Fourth Proportional to 288,043.38, 397,388.98 and 180,426.06

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Solution

The fourth proportional to 288,043.38, 397,388.98 and 180,426.06 is: 248,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,043.38 : 397,388.98 = 180,426.06 : x
  2. Step 2: Convert to fraction form
    288,043.38/397,388.98 = 180,426.06/x
  3. Step 3: Cross multiply
    288,043.38x = 397,388.98 × 180,426.06
  4. Step 4: Simplify right side
    288,043.38x = 71,699,327,948.82
  5. Step 5: Solve for x
    x = 71,699,327,948.82/288,043.38
  6. Step 6: Final answer
    x = 248,918.51

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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.