Home / 438,656.04-658,007.45-139,160.57

Finding the Fourth Proportional to 438,656.04, 658,007.45 and 139,160.57

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Solution

The fourth proportional to 438,656.04, 658,007.45 and 139,160.57 is: 208,748.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,656.04 : 658,007.45 = 139,160.57 : x
  2. Step 2: Convert to fraction form
    438,656.04/658,007.45 = 139,160.57/x
  3. Step 3: Cross multiply
    438,656.04x = 658,007.45 × 139,160.57
  4. Step 4: Simplify right side
    438,656.04x = 91,568,687,820.41
  5. Step 5: Solve for x
    x = 91,568,687,820.41/438,656.04
  6. Step 6: Final answer
    x = 208,748.27

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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.