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Finding the Fourth Proportional to 401,317.67, 553,823.78 and 220,029.16

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Solution

The fourth proportional to 401,317.67, 553,823.78 and 220,029.16 is: 303,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,317.67 : 553,823.78 = 220,029.16 : x
  2. Step 2: Convert to fraction form
    401,317.67/553,823.78 = 220,029.16/x
  3. Step 3: Cross multiply
    401,317.67x = 553,823.78 × 220,029.16
  4. Step 4: Simplify right side
    401,317.67x = 121,857,381,101.43
  5. Step 5: Solve for x
    x = 121,857,381,101.43/401,317.67
  6. Step 6: Final answer
    x = 303,643.20

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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.