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Finding the Fourth Proportional to 247,060.40, 370,504.20 and 128,692.40

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Solution

The fourth proportional to 247,060.40, 370,504.20 and 128,692.40 is: 192,993.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,060.40 : 370,504.20 = 128,692.40 : x
  2. Step 2: Convert to fraction form
    247,060.40/370,504.20 = 128,692.40/x
  3. Step 3: Cross multiply
    247,060.40x = 370,504.20 × 128,692.40
  4. Step 4: Simplify right side
    247,060.40x = 47,681,074,708.08
  5. Step 5: Solve for x
    x = 47,681,074,708.08/247,060.40
  6. Step 6: Final answer
    x = 192,993.59

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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.