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Finding the Fourth Proportional to 399,719.04, 551,643.72 and 227,644.28

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Solution

The fourth proportional to 399,719.04, 551,643.72 and 227,644.28 is: 314,167.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,719.04 : 551,643.72 = 227,644.28 : x
  2. Step 2: Convert to fraction form
    399,719.04/551,643.72 = 227,644.28/x
  3. Step 3: Cross multiply
    399,719.04x = 551,643.72 × 227,644.28
  4. Step 4: Simplify right side
    399,719.04x = 125,578,537,455.92
  5. Step 5: Solve for x
    x = 125,578,537,455.92/399,719.04
  6. Step 6: Final answer
    x = 314,167.01

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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.