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Finding the Fourth Proportional to 528,393.84, 729,167.04 and 298,933.80

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Solution

The fourth proportional to 528,393.84, 729,167.04 and 298,933.80 is: 412,519.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,393.84 : 729,167.04 = 298,933.80 : x
  2. Step 2: Convert to fraction form
    528,393.84/729,167.04 = 298,933.80/x
  3. Step 3: Cross multiply
    528,393.84x = 729,167.04 × 298,933.80
  4. Step 4: Simplify right side
    528,393.84x = 217,972,674,101.95
  5. Step 5: Solve for x
    x = 217,972,674,101.95/528,393.84
  6. Step 6: Final answer
    x = 412,519.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.