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Finding the Fourth Proportional to 247,205.80, 370,905.90 and 97,420.60

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Solution

The fourth proportional to 247,205.80, 370,905.90 and 97,420.60 is: 146,169.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,205.80 : 370,905.90 = 97,420.60 : x
  2. Step 2: Convert to fraction form
    247,205.80/370,905.90 = 97,420.60/x
  3. Step 3: Cross multiply
    247,205.80x = 370,905.90 × 97,420.60
  4. Step 4: Simplify right side
    247,205.80x = 36,133,875,321.54
  5. Step 5: Solve for x
    x = 36,133,875,321.54/247,205.80
  6. Step 6: Final answer
    x = 146,169.21

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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.