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Finding the Fourth Proportional to 401,074.88, 553,483.72 and 219,787.21

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Solution

The fourth proportional to 401,074.88, 553,483.72 and 219,787.21 is: 303,306.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,074.88 : 553,483.72 = 219,787.21 : x
  2. Step 2: Convert to fraction form
    401,074.88/553,483.72 = 219,787.21/x
  3. Step 3: Cross multiply
    401,074.88x = 553,483.72 × 219,787.21
  4. Step 4: Simplify right side
    401,074.88x = 121,648,640,666.04
  5. Step 5: Solve for x
    x = 121,648,640,666.04/401,074.88
  6. Step 6: Final answer
    x = 303,306.56

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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.