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Finding the Fourth Proportional to 248,618.10, 372,927.15 and 154,139.70

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Solution

The fourth proportional to 248,618.10, 372,927.15 and 154,139.70 is: 231,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,618.10 : 372,927.15 = 154,139.70 : x
  2. Step 2: Convert to fraction form
    248,618.10/372,927.15 = 154,139.70/x
  3. Step 3: Cross multiply
    248,618.10x = 372,927.15 × 154,139.70
  4. Step 4: Simplify right side
    248,618.10x = 57,482,879,022.86
  5. Step 5: Solve for x
    x = 57,482,879,022.86/248,618.10
  6. Step 6: Final answer
    x = 231,209.55

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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.