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Finding the Fourth Proportional to 374,881, 517,397.22 and 215,997.16

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Solution

The fourth proportional to 374,881, 517,397.22 and 215,997.16 is: 298,111.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,881 : 517,397.22 = 215,997.16 : x
  2. Step 2: Convert to fraction form
    374,881/517,397.22 = 215,997.16/x
  3. Step 3: Cross multiply
    374,881x = 517,397.22 × 215,997.16
  4. Step 4: Simplify right side
    374,881x = 111,756,330,111.90
  5. Step 5: Solve for x
    x = 111,756,330,111.90/374,881
  6. Step 6: Final answer
    x = 298,111.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.