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Finding the Fourth Proportional to 205,501, 308,313.66 and 145,645.24

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Solution

The fourth proportional to 205,501, 308,313.66 and 145,645.24 is: 218,511.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,501 : 308,313.66 = 145,645.24 : x
  2. Step 2: Convert to fraction form
    205,501/308,313.66 = 145,645.24/x
  3. Step 3: Cross multiply
    205,501x = 308,313.66 × 145,645.24
  4. Step 4: Simplify right side
    205,501x = 44,904,417,005.98
  5. Step 5: Solve for x
    x = 44,904,417,005.98/205,501
  6. Step 6: Final answer
    x = 218,511.91

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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.