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Finding the Fourth Proportional to 401,515.35, 554,091.99 and 220,228.77

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Solution

The fourth proportional to 401,515.35, 554,091.99 and 220,228.77 is: 303,916.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,515.35 : 554,091.99 = 220,228.77 : x
  2. Step 2: Convert to fraction form
    401,515.35/554,091.99 = 220,228.77/x
  3. Step 3: Cross multiply
    401,515.35x = 554,091.99 × 220,228.77
  4. Step 4: Simplify right side
    401,515.35x = 122,026,997,424.55
  5. Step 5: Solve for x
    x = 122,026,997,424.55/401,515.35
  6. Step 6: Final answer
    x = 303,916.15

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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.