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Finding the Fourth Proportional to 312,549.60, 431,320.48 and 169,309.54

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Solution

The fourth proportional to 312,549.60, 431,320.48 and 169,309.54 is: 233,648.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,549.60 : 431,320.48 = 169,309.54 : x
  2. Step 2: Convert to fraction form
    312,549.60/431,320.48 = 169,309.54/x
  3. Step 3: Cross multiply
    312,549.60x = 431,320.48 × 169,309.54
  4. Step 4: Simplify right side
    312,549.60x = 73,026,672,177.26
  5. Step 5: Solve for x
    x = 73,026,672,177.26/312,549.60
  6. Step 6: Final answer
    x = 233,648.26

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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.