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Finding the Fourth Proportional to 385,018.77, 577,567.77 and 145,334.55

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Solution

The fourth proportional to 385,018.77, 577,567.77 and 145,334.55 is: 218,016.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,018.77 : 577,567.77 = 145,334.55 : x
  2. Step 2: Convert to fraction form
    385,018.77/577,567.77 = 145,334.55/x
  3. Step 3: Cross multiply
    385,018.77x = 577,567.77 × 145,334.55
  4. Step 4: Simplify right side
    385,018.77x = 83,940,551,220.78
  5. Step 5: Solve for x
    x = 83,940,551,220.78/385,018.77
  6. Step 6: Final answer
    x = 218,016.78

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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.