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Finding the Fourth Proportional to 316,540.20, 474,810.30 and 106,127.40

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Solution

The fourth proportional to 316,540.20, 474,810.30 and 106,127.40 is: 159,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,540.20 : 474,810.30 = 106,127.40 : x
  2. Step 2: Convert to fraction form
    316,540.20/474,810.30 = 106,127.40/x
  3. Step 3: Cross multiply
    316,540.20x = 474,810.30 × 106,127.40
  4. Step 4: Simplify right side
    316,540.20x = 50,390,382,632.22
  5. Step 5: Solve for x
    x = 50,390,382,632.22/316,540.20
  6. Step 6: Final answer
    x = 159,191.10

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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.