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Finding the Fourth Proportional to 384,246.40, 575,635.20 and 206,694.40

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Solution

The fourth proportional to 384,246.40, 575,635.20 and 206,694.40 is: 309,646.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,246.40 : 575,635.20 = 206,694.40 : x
  2. Step 2: Convert to fraction form
    384,246.40/575,635.20 = 206,694.40/x
  3. Step 3: Cross multiply
    384,246.40x = 575,635.20 × 206,694.40
  4. Step 4: Simplify right side
    384,246.40x = 118,980,572,282.88
  5. Step 5: Solve for x
    x = 118,980,572,282.88/384,246.40
  6. Step 6: Final answer
    x = 309,646.55

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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.