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Finding the Fourth Proportional to 205,295.40, 307,943.10 and 148,870.80

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Solution

The fourth proportional to 205,295.40, 307,943.10 and 148,870.80 is: 223,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,295.40 : 307,943.10 = 148,870.80 : x
  2. Step 2: Convert to fraction form
    205,295.40/307,943.10 = 148,870.80/x
  3. Step 3: Cross multiply
    205,295.40x = 307,943.10 × 148,870.80
  4. Step 4: Simplify right side
    205,295.40x = 45,843,735,651.48
  5. Step 5: Solve for x
    x = 45,843,735,651.48/205,295.40
  6. Step 6: Final answer
    x = 223,306.20

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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.