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Finding the Fourth Proportional to 316,618.40, 475,618.80 and 223,306.40

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Solution

The fourth proportional to 316,618.40, 475,618.80 and 223,306.40 is: 335,447.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,618.40 : 475,618.80 = 223,306.40 : x
  2. Step 2: Convert to fraction form
    316,618.40/475,618.80 = 223,306.40/x
  3. Step 3: Cross multiply
    316,618.40x = 475,618.80 × 223,306.40
  4. Step 4: Simplify right side
    316,618.40x = 106,208,722,000.32
  5. Step 5: Solve for x
    x = 106,208,722,000.32/316,618.40
  6. Step 6: Final answer
    x = 335,447.09

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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.