Home / 401,376.52-553,905.84-220,105

Finding the Fourth Proportional to 401,376.52, 553,905.84 and 220,105

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Solution

The fourth proportional to 401,376.52, 553,905.84 and 220,105 is: 303,748.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,376.52 : 553,905.84 = 220,105 : x
  2. Step 2: Convert to fraction form
    401,376.52/553,905.84 = 220,105/x
  3. Step 3: Cross multiply
    401,376.52x = 553,905.84 × 220,105
  4. Step 4: Simplify right side
    401,376.52x = 121,917,444,913.20
  5. Step 5: Solve for x
    x = 121,917,444,913.20/401,376.52
  6. Step 6: Final answer
    x = 303,748.32

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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.