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Finding the Fourth Proportional to 278,570.54, 383,566.58 and 217,563.17

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Solution

The fourth proportional to 278,570.54, 383,566.58 and 217,563.17 is: 299,564.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,570.54 : 383,566.58 = 217,563.17 : x
  2. Step 2: Convert to fraction form
    278,570.54/383,566.58 = 217,563.17/x
  3. Step 3: Cross multiply
    278,570.54x = 383,566.58 × 217,563.17
  4. Step 4: Simplify right side
    278,570.54x = 83,449,958,045.21
  5. Step 5: Solve for x
    x = 83,449,958,045.21/278,570.54
  6. Step 6: Final answer
    x = 299,564.91

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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.