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Finding the Fourth Proportional to 246,218.40, 369,619.20 and 139,687.20

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Solution

The fourth proportional to 246,218.40, 369,619.20 and 139,687.20 is: 209,696.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,218.40 : 369,619.20 = 139,687.20 : x
  2. Step 2: Convert to fraction form
    246,218.40/369,619.20 = 139,687.20/x
  3. Step 3: Cross multiply
    246,218.40x = 369,619.20 × 139,687.20
  4. Step 4: Simplify right side
    246,218.40x = 51,631,071,114.24
  5. Step 5: Solve for x
    x = 51,631,071,114.24/246,218.40
  6. Step 6: Final answer
    x = 209,696.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.