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Finding the Fourth Proportional to 401,071.92, 553,455.21 and 219,747.75

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Solution

The fourth proportional to 401,071.92, 553,455.21 and 219,747.75 is: 303,238.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,071.92 : 553,455.21 = 219,747.75 : x
  2. Step 2: Convert to fraction form
    401,071.92/553,455.21 = 219,747.75/x
  3. Step 3: Cross multiply
    401,071.92x = 553,455.21 × 219,747.75
  4. Step 4: Simplify right side
    401,071.92x = 121,620,537,123.28
  5. Step 5: Solve for x
    x = 121,620,537,123.28/401,071.92
  6. Step 6: Final answer
    x = 303,238.72

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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.