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Finding the Fourth Proportional to 205,434.55, 308,184.95 and 63,279.80

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Solution

The fourth proportional to 205,434.55, 308,184.95 and 63,279.80 is: 94,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,434.55 : 308,184.95 = 63,279.80 : x
  2. Step 2: Convert to fraction form
    205,434.55/308,184.95 = 63,279.80/x
  3. Step 3: Cross multiply
    205,434.55x = 308,184.95 × 63,279.80
  4. Step 4: Simplify right side
    205,434.55x = 19,501,881,999.01
  5. Step 5: Solve for x
    x = 19,501,881,999.01/205,434.55
  6. Step 6: Final answer
    x = 94,929.90

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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.