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Finding the Fourth Proportional to 257,501.07, 386,243.39 and 79,960.41

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Solution

The fourth proportional to 257,501.07, 386,243.39 and 79,960.41 is: 119,938.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,501.07 : 386,243.39 = 79,960.41 : x
  2. Step 2: Convert to fraction form
    257,501.07/386,243.39 = 79,960.41/x
  3. Step 3: Cross multiply
    257,501.07x = 386,243.39 × 79,960.41
  4. Step 4: Simplify right side
    257,501.07x = 30,884,180,024.09
  5. Step 5: Solve for x
    x = 30,884,180,024.09/257,501.07
  6. Step 6: Final answer
    x = 119,938.06

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1.5x scale

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.