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Finding the Fourth Proportional to 385,018.73, 577,567.68 and 145,334.51

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Solution

The fourth proportional to 385,018.73, 577,567.68 and 145,334.51 is: 218,016.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,018.73 : 577,567.68 = 145,334.51 : x
  2. Step 2: Convert to fraction form
    385,018.73/577,567.68 = 145,334.51/x
  3. Step 3: Cross multiply
    385,018.73x = 577,567.68 × 145,334.51
  4. Step 4: Simplify right side
    385,018.73x = 83,940,517,208.56
  5. Step 5: Solve for x
    x = 83,940,517,208.56/385,018.73
  6. Step 6: Final answer
    x = 218,016.71

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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.