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Finding the Fourth Proportional to 606,960.20, 910,353.90 and 207,619.40

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Solution

The fourth proportional to 606,960.20, 910,353.90 and 207,619.40 is: 311,399.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,960.20 : 910,353.90 = 207,619.40 : x
  2. Step 2: Convert to fraction form
    606,960.20/910,353.90 = 207,619.40/x
  3. Step 3: Cross multiply
    606,960.20x = 910,353.90 × 207,619.40
  4. Step 4: Simplify right side
    606,960.20x = 189,007,130,505.66
  5. Step 5: Solve for x
    x = 189,007,130,505.66/606,960.20
  6. Step 6: Final answer
    x = 311,399.55

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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.