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Finding the Fourth Proportional to 401,328, 553,919.04 and 240,219

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Solution

The fourth proportional to 401,328, 553,919.04 and 240,219 is: 331,553.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,328 : 553,919.04 = 240,219 : x
  2. Step 2: Convert to fraction form
    401,328/553,919.04 = 240,219/x
  3. Step 3: Cross multiply
    401,328x = 553,919.04 × 240,219
  4. Step 4: Simplify right side
    401,328x = 133,061,877,869.76
  5. Step 5: Solve for x
    x = 133,061,877,869.76/401,328
  6. Step 6: Final answer
    x = 331,553.94

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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.