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Finding the Fourth Proportional to 374,781.88, 562,173.90 and 138,022.12

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Solution

The fourth proportional to 374,781.88, 562,173.90 and 138,022.12 is: 207,033.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,781.88 : 562,173.90 = 138,022.12 : x
  2. Step 2: Convert to fraction form
    374,781.88/562,173.90 = 138,022.12/x
  3. Step 3: Cross multiply
    374,781.88x = 562,173.90 × 138,022.12
  4. Step 4: Simplify right side
    374,781.88x = 77,592,433,486.67
  5. Step 5: Solve for x
    x = 77,592,433,486.67/374,781.88
  6. Step 6: Final answer
    x = 207,033.58

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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.