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Finding the Fourth Proportional to 257,544.40, 386,316.60 and 68,004.40

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Solution

The fourth proportional to 257,544.40, 386,316.60 and 68,004.40 is: 102,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,544.40 : 386,316.60 = 68,004.40 : x
  2. Step 2: Convert to fraction form
    257,544.40/386,316.60 = 68,004.40/x
  3. Step 3: Cross multiply
    257,544.40x = 386,316.60 × 68,004.40
  4. Step 4: Simplify right side
    257,544.40x = 26,271,228,593.04
  5. Step 5: Solve for x
    x = 26,271,228,593.04/257,544.40
  6. Step 6: Final answer
    x = 102,006.60

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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.