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Finding the Fourth Proportional to 221,100.60, 331,698.12 and 71,349.40

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Solution

The fourth proportional to 221,100.60, 331,698.12 and 71,349.40 is: 107,039.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,100.60 : 331,698.12 = 71,349.40 : x
  2. Step 2: Convert to fraction form
    221,100.60/331,698.12 = 71,349.40/x
  3. Step 3: Cross multiply
    221,100.60x = 331,698.12 × 71,349.40
  4. Step 4: Simplify right side
    221,100.60x = 23,666,461,843.13
  5. Step 5: Solve for x
    x = 23,666,461,843.13/221,100.60
  6. Step 6: Final answer
    x = 107,039.34

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1.5x scale

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.