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Finding the Fourth Proportional to 209,828.80, 315,520.80 and 175,614.40

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Solution

The fourth proportional to 209,828.80, 315,520.80 and 175,614.40 is: 264,072.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,828.80 : 315,520.80 = 175,614.40 : x
  2. Step 2: Convert to fraction form
    209,828.80/315,520.80 = 175,614.40/x
  3. Step 3: Cross multiply
    209,828.80x = 315,520.80 × 175,614.40
  4. Step 4: Simplify right side
    209,828.80x = 55,409,995,979.52
  5. Step 5: Solve for x
    x = 55,409,995,979.52/209,828.80
  6. Step 6: Final answer
    x = 264,072.41

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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.