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Finding the Fourth Proportional to 404,312.60, 606,468.90 and 137,984.60

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Solution

The fourth proportional to 404,312.60, 606,468.90 and 137,984.60 is: 206,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,312.60 : 606,468.90 = 137,984.60 : x
  2. Step 2: Convert to fraction form
    404,312.60/606,468.90 = 137,984.60/x
  3. Step 3: Cross multiply
    404,312.60x = 606,468.90 × 137,984.60
  4. Step 4: Simplify right side
    404,312.60x = 83,683,368,578.94
  5. Step 5: Solve for x
    x = 83,683,368,578.94/404,312.60
  6. Step 6: Final answer
    x = 206,976.90

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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.