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Finding the Fourth Proportional to 247,191.40, 371,089.98 and 163,021.80

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Solution

The fourth proportional to 247,191.40, 371,089.98 and 163,021.80 is: 244,732.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,191.40 : 371,089.98 = 163,021.80 : x
  2. Step 2: Convert to fraction form
    247,191.40/371,089.98 = 163,021.80/x
  3. Step 3: Cross multiply
    247,191.40x = 371,089.98 × 163,021.80
  4. Step 4: Simplify right side
    247,191.40x = 60,495,756,501.56
  5. Step 5: Solve for x
    x = 60,495,756,501.56/247,191.40
  6. Step 6: Final answer
    x = 244,732.45

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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.