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Finding the Fourth Proportional to 389,753.31, 538,231.00 and 368,525.66

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Solution

The fourth proportional to 389,753.31, 538,231.00 and 368,525.66 is: 508,916.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,753.31 : 538,231.00 = 368,525.66 : x
  2. Step 2: Convert to fraction form
    389,753.31/538,231.00 = 368,525.66/x
  3. Step 3: Cross multiply
    389,753.31x = 538,231.00 × 368,525.66
  4. Step 4: Simplify right side
    389,753.31x = 198,351,934,931.72
  5. Step 5: Solve for x
    x = 198,351,934,931.72/389,753.31
  6. Step 6: Final answer
    x = 508,916.61

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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.