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Finding the Fourth Proportional to 202,359.40, 303,539.10 and 127,235.95

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Solution

The fourth proportional to 202,359.40, 303,539.10 and 127,235.95 is: 190,853.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,359.40 : 303,539.10 = 127,235.95 : x
  2. Step 2: Convert to fraction form
    202,359.40/303,539.10 = 127,235.95/x
  3. Step 3: Cross multiply
    202,359.40x = 303,539.10 × 127,235.95
  4. Step 4: Simplify right side
    202,359.40x = 38,621,085,750.65
  5. Step 5: Solve for x
    x = 38,621,085,750.65/202,359.40
  6. Step 6: Final answer
    x = 190,853.93

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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.