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Finding the Fourth Proportional to 401,117.76, 553,549.44 and 219,817.60

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Solution

The fourth proportional to 401,117.76, 553,549.44 and 219,817.60 is: 303,352.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,117.76 : 553,549.44 = 219,817.60 : x
  2. Step 2: Convert to fraction form
    401,117.76/553,549.44 = 219,817.60/x
  3. Step 3: Cross multiply
    401,117.76x = 553,549.44 × 219,817.60
  4. Step 4: Simplify right side
    401,117.76x = 121,679,909,382.14
  5. Step 5: Solve for x
    x = 121,679,909,382.14/401,117.76
  6. Step 6: Final answer
    x = 303,352.09

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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.