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Finding the Fourth Proportional to 401,326, 553,826.95 and 220,034.93

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Solution

The fourth proportional to 401,326, 553,826.95 and 220,034.93 is: 303,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,326 : 553,826.95 = 220,034.93 : x
  2. Step 2: Convert to fraction form
    401,326/553,826.95 = 220,034.93/x
  3. Step 3: Cross multiply
    401,326x = 553,826.95 × 220,034.93
  4. Step 4: Simplify right side
    401,326x = 121,861,274,175.36
  5. Step 5: Solve for x
    x = 121,861,274,175.36/401,326
  6. Step 6: Final answer
    x = 303,646.60

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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.