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Finding the Fourth Proportional to 366,811.12, 506,078.34 and 221,562.64

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Solution

The fourth proportional to 366,811.12, 506,078.34 and 221,562.64 is: 305,683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,811.12 : 506,078.34 = 221,562.64 : x
  2. Step 2: Convert to fraction form
    366,811.12/506,078.34 = 221,562.64/x
  3. Step 3: Cross multiply
    366,811.12x = 506,078.34 × 221,562.64
  4. Step 4: Simplify right side
    366,811.12x = 112,128,053,057.22
  5. Step 5: Solve for x
    x = 112,128,053,057.22/366,811.12
  6. Step 6: Final answer
    x = 305,683.35

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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.