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Finding the Fourth Proportional to 221,007.99, 305,030.91 and 130,358.57

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Solution

The fourth proportional to 221,007.99, 305,030.91 and 130,358.57 is: 179,918.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,007.99 : 305,030.91 = 130,358.57 : x
  2. Step 2: Convert to fraction form
    221,007.99/305,030.91 = 130,358.57/x
  3. Step 3: Cross multiply
    221,007.99x = 305,030.91 × 130,358.57
  4. Step 4: Simplify right side
    221,007.99x = 39,763,392,197.09
  5. Step 5: Solve for x
    x = 39,763,392,197.09/221,007.99
  6. Step 6: Final answer
    x = 179,918.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.