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Finding the Fourth Proportional to 312,566.96, 431,344.44 and 169,326.88

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Solution

The fourth proportional to 312,566.96, 431,344.44 and 169,326.88 is: 233,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,566.96 : 431,344.44 = 169,326.88 : x
  2. Step 2: Convert to fraction form
    312,566.96/431,344.44 = 169,326.88/x
  3. Step 3: Cross multiply
    312,566.96x = 431,344.44 × 169,326.88
  4. Step 4: Simplify right side
    312,566.96x = 73,038,208,230.55
  5. Step 5: Solve for x
    x = 73,038,208,230.55/312,566.96
  6. Step 6: Final answer
    x = 233,672.20

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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.