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Finding the Fourth Proportional to 538,553.95, 807,828.49 and 139,160.77

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Solution

The fourth proportional to 538,553.95, 807,828.49 and 139,160.77 is: 208,740.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,553.95 : 807,828.49 = 139,160.77 : x
  2. Step 2: Convert to fraction form
    538,553.95/807,828.49 = 139,160.77/x
  3. Step 3: Cross multiply
    538,553.95x = 807,828.49 × 139,160.77
  4. Step 4: Simplify right side
    538,553.95x = 112,418,032,850.72
  5. Step 5: Solve for x
    x = 112,418,032,850.72/538,553.95
  6. Step 6: Final answer
    x = 208,740.52

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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.