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Finding the Fourth Proportional to 398,806.58, 550,339.65 and 237,578.14

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Solution

The fourth proportional to 398,806.58, 550,339.65 and 237,578.14 is: 327,849.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,806.58 : 550,339.65 = 237,578.14 : x
  2. Step 2: Convert to fraction form
    398,806.58/550,339.65 = 237,578.14/x
  3. Step 3: Cross multiply
    398,806.58x = 550,339.65 × 237,578.14
  4. Step 4: Simplify right side
    398,806.58x = 130,748,670,415.25
  5. Step 5: Solve for x
    x = 130,748,670,415.25/398,806.58
  6. Step 6: Final answer
    x = 327,849.83

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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.