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Finding the Fourth Proportional to 425,632.76, 638,637.21 and 223,180.52

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Solution

The fourth proportional to 425,632.76, 638,637.21 and 223,180.52 is: 334,869.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,632.76 : 638,637.21 = 223,180.52 : x
  2. Step 2: Convert to fraction form
    425,632.76/638,637.21 = 223,180.52/x
  3. Step 3: Cross multiply
    425,632.76x = 638,637.21 × 223,180.52
  4. Step 4: Simplify right side
    425,632.76x = 142,531,384,619.15
  5. Step 5: Solve for x
    x = 142,531,384,619.15/425,632.76
  6. Step 6: Final answer
    x = 334,869.39

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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.