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Finding the Fourth Proportional to 606,148.70, 909,136.65 and 206,807.90

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Solution

The fourth proportional to 606,148.70, 909,136.65 and 206,807.90 is: 310,182.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,148.70 : 909,136.65 = 206,807.90 : x
  2. Step 2: Convert to fraction form
    606,148.70/909,136.65 = 206,807.90/x
  3. Step 3: Cross multiply
    606,148.70x = 909,136.65 × 206,807.90
  4. Step 4: Simplify right side
    606,148.70x = 188,016,641,399.54
  5. Step 5: Solve for x
    x = 188,016,641,399.54/606,148.70
  6. Step 6: Final answer
    x = 310,182.37

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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.