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Finding the Fourth Proportional to 311,979.42, 468,052.11 and 98,751.42

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Solution

The fourth proportional to 311,979.42, 468,052.11 and 98,751.42 is: 148,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,979.42 : 468,052.11 = 98,751.42 : x
  2. Step 2: Convert to fraction form
    311,979.42/468,052.11 = 98,751.42/x
  3. Step 3: Cross multiply
    311,979.42x = 468,052.11 × 98,751.42
  4. Step 4: Simplify right side
    311,979.42x = 46,220,810,496.50
  5. Step 5: Solve for x
    x = 46,220,810,496.50/311,979.42
  6. Step 6: Final answer
    x = 148,153.40

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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.