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Finding the Fourth Proportional to 245,359.45, 338,601.50 and 149,918.77

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Solution

The fourth proportional to 245,359.45, 338,601.50 and 149,918.77 is: 206,891.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,359.45 : 338,601.50 = 149,918.77 : x
  2. Step 2: Convert to fraction form
    245,359.45/338,601.50 = 149,918.77/x
  3. Step 3: Cross multiply
    245,359.45x = 338,601.50 × 149,918.77
  4. Step 4: Simplify right side
    245,359.45x = 50,762,717,957.55
  5. Step 5: Solve for x
    x = 50,762,717,957.55/245,359.45
  6. Step 6: Final answer
    x = 206,891.23

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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.