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Finding the Fourth Proportional to 393,527.74, 543,026.41 and 221,442.71

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Solution

The fourth proportional to 393,527.74, 543,026.41 and 221,442.71 is: 305,567.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,527.74 : 543,026.41 = 221,442.71 : x
  2. Step 2: Convert to fraction form
    393,527.74/543,026.41 = 221,442.71/x
  3. Step 3: Cross multiply
    393,527.74x = 543,026.41 × 221,442.71
  4. Step 4: Simplify right side
    393,527.74x = 120,249,240,662.38
  5. Step 5: Solve for x
    x = 120,249,240,662.38/393,527.74
  6. Step 6: Final answer
    x = 305,567.38

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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.