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Finding the Fourth Proportional to 524,378.43, 786,400.88 and 169,309.86

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Solution

The fourth proportional to 524,378.43, 786,400.88 and 169,309.86 is: 253,910.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,378.43 : 786,400.88 = 169,309.86 : x
  2. Step 2: Convert to fraction form
    524,378.43/786,400.88 = 169,309.86/x
  3. Step 3: Cross multiply
    524,378.43x = 786,400.88 × 169,309.86
  4. Step 4: Simplify right side
    524,378.43x = 133,145,422,050.13
  5. Step 5: Solve for x
    x = 133,145,422,050.13/524,378.43
  6. Step 6: Final answer
    x = 253,910.94

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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.