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Finding the Fourth Proportional to 423,863.88, 635,669.01 and 139,501.94

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Solution

The fourth proportional to 423,863.88, 635,669.01 and 139,501.94 is: 209,211.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,863.88 : 635,669.01 = 139,501.94 : x
  2. Step 2: Convert to fraction form
    423,863.88/635,669.01 = 139,501.94/x
  3. Step 3: Cross multiply
    423,863.88x = 635,669.01 × 139,501.94
  4. Step 4: Simplify right side
    423,863.88x = 88,677,059,395.37
  5. Step 5: Solve for x
    x = 88,677,059,395.37/423,863.88
  6. Step 6: Final answer
    x = 209,211.17

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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.