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Finding the Fourth Proportional to 205,554.61, 308,328.49 and 61,460.78

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Solution

The fourth proportional to 205,554.61, 308,328.49 and 61,460.78 is: 92,190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,554.61 : 308,328.49 = 61,460.78 : x
  2. Step 2: Convert to fraction form
    205,554.61/308,328.49 = 61,460.78/x
  3. Step 3: Cross multiply
    205,554.61x = 308,328.49 × 61,460.78
  4. Step 4: Simplify right side
    205,554.61x = 18,950,108,026.81
  5. Step 5: Solve for x
    x = 18,950,108,026.81/205,554.61
  6. Step 6: Final answer
    x = 92,190.14

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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.