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Finding the Fourth Proportional to 401,744.79, 554,406.30 and 220,459.77

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Solution

The fourth proportional to 401,744.79, 554,406.30 and 220,459.77 is: 304,233.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,744.79 : 554,406.30 = 220,459.77 : x
  2. Step 2: Convert to fraction form
    401,744.79/554,406.30 = 220,459.77/x
  3. Step 3: Cross multiply
    401,744.79x = 554,406.30 × 220,459.77
  4. Step 4: Simplify right side
    401,744.79x = 122,224,285,384.55
  5. Step 5: Solve for x
    x = 122,224,285,384.55/401,744.79
  6. Step 6: Final answer
    x = 304,233.65

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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.