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Finding the Fourth Proportional to 501,891.72, 692,611.11 and 272,448.90

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Solution

The fourth proportional to 501,891.72, 692,611.11 and 272,448.90 is: 375,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,891.72 : 692,611.11 = 272,448.90 : x
  2. Step 2: Convert to fraction form
    501,891.72/692,611.11 = 272,448.90/x
  3. Step 3: Cross multiply
    501,891.72x = 692,611.11 × 272,448.90
  4. Step 4: Simplify right side
    501,891.72x = 188,701,135,047.28
  5. Step 5: Solve for x
    x = 188,701,135,047.28/501,891.72
  6. Step 6: Final answer
    x = 375,979.77

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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.