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Finding the Fourth Proportional to 401,339.52, 553,854.78 and 220,068

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Solution

The fourth proportional to 401,339.52, 553,854.78 and 220,068 is: 303,697.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,339.52 : 553,854.78 = 220,068 : x
  2. Step 2: Convert to fraction form
    401,339.52/553,854.78 = 220,068/x
  3. Step 3: Cross multiply
    401,339.52x = 553,854.78 × 220,068
  4. Step 4: Simplify right side
    401,339.52x = 121,885,713,725.04
  5. Step 5: Solve for x
    x = 121,885,713,725.04/401,339.52
  6. Step 6: Final answer
    x = 303,697.26

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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.