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Finding the Fourth Proportional to 257,986.20, 386,323.20 and 246,176.40

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Solution

The fourth proportional to 257,986.20, 386,323.20 and 246,176.40 is: 368,638.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,986.20 : 386,323.20 = 246,176.40 : x
  2. Step 2: Convert to fraction form
    257,986.20/386,323.20 = 246,176.40/x
  3. Step 3: Cross multiply
    257,986.20x = 386,323.20 × 246,176.40
  4. Step 4: Simplify right side
    257,986.20x = 95,103,654,612.48
  5. Step 5: Solve for x
    x = 95,103,654,612.48/257,986.20
  6. Step 6: Final answer
    x = 368,638.53

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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.