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Finding the Fourth Proportional to 388,719.90, 536,250.11 and 227,475.16

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Solution

The fourth proportional to 388,719.90, 536,250.11 and 227,475.16 is: 313,808.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,719.90 : 536,250.11 = 227,475.16 : x
  2. Step 2: Convert to fraction form
    388,719.90/536,250.11 = 227,475.16/x
  3. Step 3: Cross multiply
    388,719.90x = 536,250.11 × 227,475.16
  4. Step 4: Simplify right side
    388,719.90x = 121,983,577,094.27
  5. Step 5: Solve for x
    x = 121,983,577,094.27/388,719.90
  6. Step 6: Final answer
    x = 313,808.42

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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.