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Finding the Fourth Proportional to 368,187.94, 508,106.26 and 215,239.20

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Solution

The fourth proportional to 368,187.94, 508,106.26 and 215,239.20 is: 297,034.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,187.94 : 508,106.26 = 215,239.20 : x
  2. Step 2: Convert to fraction form
    368,187.94/508,106.26 = 215,239.20/x
  3. Step 3: Cross multiply
    368,187.94x = 508,106.26 × 215,239.20
  4. Step 4: Simplify right side
    368,187.94x = 109,364,384,917.39
  5. Step 5: Solve for x
    x = 109,364,384,917.39/368,187.94
  6. Step 6: Final answer
    x = 297,034.13

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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.