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Finding the Fourth Proportional to 403,029.32, 556,180.44 and 221,737.40

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Solution

The fourth proportional to 403,029.32, 556,180.44 and 221,737.40 is: 305,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,029.32 : 556,180.44 = 221,737.40 : x
  2. Step 2: Convert to fraction form
    403,029.32/556,180.44 = 221,737.40/x
  3. Step 3: Cross multiply
    403,029.32x = 556,180.44 × 221,737.40
  4. Step 4: Simplify right side
    403,029.32x = 123,326,004,696.46
  5. Step 5: Solve for x
    x = 123,326,004,696.46/403,029.32
  6. Step 6: Final answer
    x = 305,997.60

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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.