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Finding the Fourth Proportional to 143,370.40, 215,055.60 and 49,810

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Solution

The fourth proportional to 143,370.40, 215,055.60 and 49,810 is: 74,715

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,370.40 : 215,055.60 = 49,810 : x
  2. Step 2: Convert to fraction form
    143,370.40/215,055.60 = 49,810/x
  3. Step 3: Cross multiply
    143,370.40x = 215,055.60 × 49,810
  4. Step 4: Simplify right side
    143,370.40x = 10,711,919,436
  5. Step 5: Solve for x
    x = 10,711,919,436/143,370.40
  6. Step 6: Final answer
    x = 74,715

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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.