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Finding the Fourth Proportional to 438,673.32, 658,044 and 139,170.96

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Solution

The fourth proportional to 438,673.32, 658,044 and 139,170.96 is: 208,767.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,673.32 : 658,044 = 139,170.96 : x
  2. Step 2: Convert to fraction form
    438,673.32/658,044 = 139,170.96/x
  3. Step 3: Cross multiply
    438,673.32x = 658,044 × 139,170.96
  4. Step 4: Simplify right side
    438,673.32x = 91,580,615,202.24
  5. Step 5: Solve for x
    x = 91,580,615,202.24/438,673.32
  6. Step 6: Final answer
    x = 208,767.23

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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.