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Finding the Fourth Proportional to 404,487, 558,192.06 and 225,639

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Solution

The fourth proportional to 404,487, 558,192.06 and 225,639 is: 311,381.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,487 : 558,192.06 = 225,639 : x
  2. Step 2: Convert to fraction form
    404,487/558,192.06 = 225,639/x
  3. Step 3: Cross multiply
    404,487x = 558,192.06 × 225,639
  4. Step 4: Simplify right side
    404,487x = 125,949,898,226.34
  5. Step 5: Solve for x
    x = 125,949,898,226.34/404,487
  6. Step 6: Final answer
    x = 311,381.82

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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.