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Finding the Fourth Proportional to 247,210.40, 370,815.60 and 106,871.20

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Solution

The fourth proportional to 247,210.40, 370,815.60 and 106,871.20 is: 160,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,210.40 : 370,815.60 = 106,871.20 : x
  2. Step 2: Convert to fraction form
    247,210.40/370,815.60 = 106,871.20/x
  3. Step 3: Cross multiply
    247,210.40x = 370,815.60 × 106,871.20
  4. Step 4: Simplify right side
    247,210.40x = 39,629,508,150.72
  5. Step 5: Solve for x
    x = 39,629,508,150.72/247,210.40
  6. Step 6: Final answer
    x = 160,306.80

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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.