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Finding the Fourth Proportional to 385,627.39, 577,687.78 and 265,663.15

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Solution

The fourth proportional to 385,627.39, 577,687.78 and 265,663.15 is: 397,975.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,627.39 : 577,687.78 = 265,663.15 : x
  2. Step 2: Convert to fraction form
    385,627.39/577,687.78 = 265,663.15/x
  3. Step 3: Cross multiply
    385,627.39x = 577,687.78 × 265,663.15
  4. Step 4: Simplify right side
    385,627.39x = 153,470,355,351.31
  5. Step 5: Solve for x
    x = 153,470,355,351.31/385,627.39
  6. Step 6: Final answer
    x = 397,975.76

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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.