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Finding the Fourth Proportional to 394,409.22, 592,139.16 and 266,754.18

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Solution

The fourth proportional to 394,409.22, 592,139.16 and 266,754.18 is: 400,486.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,409.22 : 592,139.16 = 266,754.18 : x
  2. Step 2: Convert to fraction form
    394,409.22/592,139.16 = 266,754.18/x
  3. Step 3: Cross multiply
    394,409.22x = 592,139.16 × 266,754.18
  4. Step 4: Simplify right side
    394,409.22x = 157,955,596,071.69
  5. Step 5: Solve for x
    x = 157,955,596,071.69/394,409.22
  6. Step 6: Final answer
    x = 400,486.57

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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.