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Finding the Fourth Proportional to 317,883.68, 438,527.90 and 231,657.80

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Solution

The fourth proportional to 317,883.68, 438,527.90 and 231,657.80 is: 319,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,883.68 : 438,527.90 = 231,657.80 : x
  2. Step 2: Convert to fraction form
    317,883.68/438,527.90 = 231,657.80/x
  3. Step 3: Cross multiply
    317,883.68x = 438,527.90 × 231,657.80
  4. Step 4: Simplify right side
    317,883.68x = 101,588,408,552.62
  5. Step 5: Solve for x
    x = 101,588,408,552.62/317,883.68
  6. Step 6: Final answer
    x = 319,577.30

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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.