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Finding the Fourth Proportional to 140,965.60, 211,477.20 and 47,480.80

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Solution

The fourth proportional to 140,965.60, 211,477.20 and 47,480.80 is: 71,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,965.60 : 211,477.20 = 47,480.80 : x
  2. Step 2: Convert to fraction form
    140,965.60/211,477.20 = 47,480.80/x
  3. Step 3: Cross multiply
    140,965.60x = 211,477.20 × 47,480.80
  4. Step 4: Simplify right side
    140,965.60x = 10,041,106,637.76
  5. Step 5: Solve for x
    x = 10,041,106,637.76/140,965.60
  6. Step 6: Final answer
    x = 71,230.90

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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.