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Finding the Fourth Proportional to 307,940.41, 425,365.77 and 247,737.79

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Solution

The fourth proportional to 307,940.41, 425,365.77 and 247,737.79 is: 342,206.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,940.41 : 425,365.77 = 247,737.79 : x
  2. Step 2: Convert to fraction form
    307,940.41/425,365.77 = 247,737.79/x
  3. Step 3: Cross multiply
    307,940.41x = 425,365.77 × 247,737.79
  4. Step 4: Simplify right side
    307,940.41x = 105,379,175,801.45
  5. Step 5: Solve for x
    x = 105,379,175,801.45/307,940.41
  6. Step 6: Final answer
    x = 342,206.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.