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Finding the Fourth Proportional to 257,370.77, 386,050.68 and 70,382.27

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Solution

The fourth proportional to 257,370.77, 386,050.68 and 70,382.27 is: 105,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,370.77 : 386,050.68 = 70,382.27 : x
  2. Step 2: Convert to fraction form
    257,370.77/386,050.68 = 70,382.27/x
  3. Step 3: Cross multiply
    257,370.77x = 386,050.68 × 70,382.27
  4. Step 4: Simplify right side
    257,370.77x = 27,171,121,263.19
  5. Step 5: Solve for x
    x = 27,171,121,263.19/257,370.77
  6. Step 6: Final answer
    x = 105,571.90

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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.