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Finding the Fourth Proportional to 438,762.25, 658,143.38 and 106,338.25

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Solution

The fourth proportional to 438,762.25, 658,143.38 and 106,338.25 is: 159,507.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,762.25 : 658,143.38 = 106,338.25 : x
  2. Step 2: Convert to fraction form
    438,762.25/658,143.38 = 106,338.25/x
  3. Step 3: Cross multiply
    438,762.25x = 658,143.38 × 106,338.25
  4. Step 4: Simplify right side
    438,762.25x = 69,985,814,746.59
  5. Step 5: Solve for x
    x = 69,985,814,746.59/438,762.25
  6. Step 6: Final answer
    x = 159,507.38

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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.