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Finding the Fourth Proportional to 385,391.52, 577,943.64 and 132,601.32

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Solution

The fourth proportional to 385,391.52, 577,943.64 and 132,601.32 is: 198,852.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,391.52 : 577,943.64 = 132,601.32 : x
  2. Step 2: Convert to fraction form
    385,391.52/577,943.64 = 132,601.32/x
  3. Step 3: Cross multiply
    385,391.52x = 577,943.64 × 132,601.32
  4. Step 4: Simplify right side
    385,391.52x = 76,636,089,549.60
  5. Step 5: Solve for x
    x = 76,636,089,549.60/385,391.52
  6. Step 6: Final answer
    x = 198,852.56

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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.