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Finding the Fourth Proportional to 308,129.85, 425,180.11 and 180,758.97

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Solution

The fourth proportional to 308,129.85, 425,180.11 and 180,758.97 is: 249,424.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,129.85 : 425,180.11 = 180,758.97 : x
  2. Step 2: Convert to fraction form
    308,129.85/425,180.11 = 180,758.97/x
  3. Step 3: Cross multiply
    308,129.85x = 425,180.11 × 180,758.97
  4. Step 4: Simplify right side
    308,129.85x = 76,855,118,748.09
  5. Step 5: Solve for x
    x = 76,855,118,748.09/308,129.85
  6. Step 6: Final answer
    x = 249,424.45

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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.