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Finding the Fourth Proportional to 292,640.40, 403,822.80 and 171,786.60

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Solution

The fourth proportional to 292,640.40, 403,822.80 and 171,786.60 is: 237,053.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,640.40 : 403,822.80 = 171,786.60 : x
  2. Step 2: Convert to fraction form
    292,640.40/403,822.80 = 171,786.60/x
  3. Step 3: Cross multiply
    292,640.40x = 403,822.80 × 171,786.60
  4. Step 4: Simplify right side
    292,640.40x = 69,371,345,814.48
  5. Step 5: Solve for x
    x = 69,371,345,814.48/292,640.40
  6. Step 6: Final answer
    x = 237,053.21

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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.