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Finding the Fourth Proportional to 401,112.99, 553,523.40 and 219,821.62

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Solution

The fourth proportional to 401,112.99, 553,523.40 and 219,821.62 is: 303,346.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,112.99 : 553,523.40 = 219,821.62 : x
  2. Step 2: Convert to fraction form
    401,112.99/553,523.40 = 219,821.62/x
  3. Step 3: Cross multiply
    401,112.99x = 553,523.40 × 219,821.62
  4. Step 4: Simplify right side
    401,112.99x = 121,676,411,088.49
  5. Step 5: Solve for x
    x = 121,676,411,088.49/401,112.99
  6. Step 6: Final answer
    x = 303,346.97

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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.