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Finding the Fourth Proportional to 576,106.18, 864,200.80 and 221,120.20

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Solution

The fourth proportional to 576,106.18, 864,200.80 and 221,120.20 is: 331,696.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,106.18 : 864,200.80 = 221,120.20 : x
  2. Step 2: Convert to fraction form
    576,106.18/864,200.80 = 221,120.20/x
  3. Step 3: Cross multiply
    576,106.18x = 864,200.80 × 221,120.20
  4. Step 4: Simplify right side
    576,106.18x = 191,092,253,736.16
  5. Step 5: Solve for x
    x = 191,092,253,736.16/576,106.18
  6. Step 6: Final answer
    x = 331,696.24

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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.