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Finding the Fourth Proportional to 368,456.57, 508,469.09 and 207,311.81

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Solution

The fourth proportional to 368,456.57, 508,469.09 and 207,311.81 is: 286,089.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,456.57 : 508,469.09 = 207,311.81 : x
  2. Step 2: Convert to fraction form
    368,456.57/508,469.09 = 207,311.81/x
  3. Step 3: Cross multiply
    368,456.57x = 508,469.09 × 207,311.81
  4. Step 4: Simplify right side
    368,456.57x = 105,411,646,340.39
  5. Step 5: Solve for x
    x = 105,411,646,340.39/368,456.57
  6. Step 6: Final answer
    x = 286,089.75

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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.