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Finding the Fourth Proportional to 202,403.60, 303,605.40 and 142,042.40

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Solution

The fourth proportional to 202,403.60, 303,605.40 and 142,042.40 is: 213,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,403.60 : 303,605.40 = 142,042.40 : x
  2. Step 2: Convert to fraction form
    202,403.60/303,605.40 = 142,042.40/x
  3. Step 3: Cross multiply
    202,403.60x = 303,605.40 × 142,042.40
  4. Step 4: Simplify right side
    202,403.60x = 43,124,839,668.96
  5. Step 5: Solve for x
    x = 43,124,839,668.96/202,403.60
  6. Step 6: Final answer
    x = 213,063.60

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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.