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Finding the Fourth Proportional to 245,870.40, 368,755.20 and 68,332.80

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Solution

The fourth proportional to 245,870.40, 368,755.20 and 68,332.80 is: 102,485.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,870.40 : 368,755.20 = 68,332.80 : x
  2. Step 2: Convert to fraction form
    245,870.40/368,755.20 = 68,332.80/x
  3. Step 3: Cross multiply
    245,870.40x = 368,755.20 × 68,332.80
  4. Step 4: Simplify right side
    245,870.40x = 25,198,075,330.56
  5. Step 5: Solve for x
    x = 25,198,075,330.56/245,870.40
  6. Step 6: Final answer
    x = 102,485.19

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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.