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Finding the Fourth Proportional to 371,395.17, 556,723.64 and 221,410.71

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Solution

The fourth proportional to 371,395.17, 556,723.64 and 221,410.71 is: 331,896.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,395.17 : 556,723.64 = 221,410.71 : x
  2. Step 2: Convert to fraction form
    371,395.17/556,723.64 = 221,410.71/x
  3. Step 3: Cross multiply
    371,395.17x = 556,723.64 × 221,410.71
  4. Step 4: Simplify right side
    371,395.17x = 123,264,575,299.13
  5. Step 5: Solve for x
    x = 123,264,575,299.13/371,395.17
  6. Step 6: Final answer
    x = 331,896.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.