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Finding the Fourth Proportional to 425,315.90, 638,098.58 and 125,804.36

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Solution

The fourth proportional to 425,315.90, 638,098.58 and 125,804.36 is: 188,743.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,315.90 : 638,098.58 = 125,804.36 : x
  2. Step 2: Convert to fraction form
    425,315.90/638,098.58 = 125,804.36/x
  3. Step 3: Cross multiply
    425,315.90x = 638,098.58 × 125,804.36
  4. Step 4: Simplify right side
    425,315.90x = 80,275,580,597.83
  5. Step 5: Solve for x
    x = 80,275,580,597.83/425,315.90
  6. Step 6: Final answer
    x = 188,743.43

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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.