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Finding the Fourth Proportional to 401,017.72, 553,397.82 and 219,727.96

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Solution

The fourth proportional to 401,017.72, 553,397.82 and 219,727.96 is: 303,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,017.72 : 553,397.82 = 219,727.96 : x
  2. Step 2: Convert to fraction form
    401,017.72/553,397.82 = 219,727.96/x
  3. Step 3: Cross multiply
    401,017.72x = 553,397.82 × 219,727.96
  4. Step 4: Simplify right side
    401,017.72x = 121,596,974,057.05
  5. Step 5: Solve for x
    x = 121,596,974,057.05/401,017.72
  6. Step 6: Final answer
    x = 303,220.95

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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.