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Finding the Fourth Proportional to 219,993.60, 330,001.20 and 115,017.60

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Solution

The fourth proportional to 219,993.60, 330,001.20 and 115,017.60 is: 172,532.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,993.60 : 330,001.20 = 115,017.60 : x
  2. Step 2: Convert to fraction form
    219,993.60/330,001.20 = 115,017.60/x
  3. Step 3: Cross multiply
    219,993.60x = 330,001.20 × 115,017.60
  4. Step 4: Simplify right side
    219,993.60x = 37,955,946,021.12
  5. Step 5: Solve for x
    x = 37,955,946,021.12/219,993.60
  6. Step 6: Final answer
    x = 172,532.05

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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.