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Finding the Fourth Proportional to 374,414.40, 517,881.60 and 356,918.40

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Solution

The fourth proportional to 374,414.40, 517,881.60 and 356,918.40 is: 493,681.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,414.40 : 517,881.60 = 356,918.40 : x
  2. Step 2: Convert to fraction form
    374,414.40/517,881.60 = 356,918.40/x
  3. Step 3: Cross multiply
    374,414.40x = 517,881.60 × 356,918.40
  4. Step 4: Simplify right side
    374,414.40x = 184,841,472,061.44
  5. Step 5: Solve for x
    x = 184,841,472,061.44/374,414.40
  6. Step 6: Final answer
    x = 493,681.53

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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.