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Finding the Fourth Proportional to 515,446.67, 772,859.26 and 231,085.79

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Solution

The fourth proportional to 515,446.67, 772,859.26 and 231,085.79 is: 346,489.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,446.67 : 772,859.26 = 231,085.79 : x
  2. Step 2: Convert to fraction form
    515,446.67/772,859.26 = 231,085.79/x
  3. Step 3: Cross multiply
    515,446.67x = 772,859.26 × 231,085.79
  4. Step 4: Simplify right side
    515,446.67x = 178,596,792,655.92
  5. Step 5: Solve for x
    x = 178,596,792,655.92/515,446.67
  6. Step 6: Final answer
    x = 346,489.37

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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.