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Finding the Fourth Proportional to 401,310, 553,804.08 and 220,032

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Solution

The fourth proportional to 401,310, 553,804.08 and 220,032 is: 303,642.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,310 : 553,804.08 = 220,032 : x
  2. Step 2: Convert to fraction form
    401,310/553,804.08 = 220,032/x
  3. Step 3: Cross multiply
    401,310x = 553,804.08 × 220,032
  4. Step 4: Simplify right side
    401,310x = 121,854,619,330.56
  5. Step 5: Solve for x
    x = 121,854,619,330.56/401,310
  6. Step 6: Final answer
    x = 303,642.12

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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.