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Finding the Fourth Proportional to 366,135.78, 505,502.30 and 251,377.40

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Solution

The fourth proportional to 366,135.78, 505,502.30 and 251,377.40 is: 347,062.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,135.78 : 505,502.30 = 251,377.40 : x
  2. Step 2: Convert to fraction form
    366,135.78/505,502.30 = 251,377.40/x
  3. Step 3: Cross multiply
    366,135.78x = 505,502.30 × 251,377.40
  4. Step 4: Simplify right side
    366,135.78x = 127,071,853,868.02
  5. Step 5: Solve for x
    x = 127,071,853,868.02/366,135.78
  6. Step 6: Final answer
    x = 347,062.10

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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.