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Finding the Fourth Proportional to 528,508.31, 729,171.89 and 295,900.98

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Solution

The fourth proportional to 528,508.31, 729,171.89 and 295,900.98 is: 408,248.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,508.31 : 729,171.89 = 295,900.98 : x
  2. Step 2: Convert to fraction form
    528,508.31/729,171.89 = 295,900.98/x
  3. Step 3: Cross multiply
    528,508.31x = 729,171.89 × 295,900.98
  4. Step 4: Simplify right side
    528,508.31x = 215,762,675,359.95
  5. Step 5: Solve for x
    x = 215,762,675,359.95/528,508.31
  6. Step 6: Final answer
    x = 408,248.41

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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.