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Finding the Fourth Proportional to 524,671.20, 787,006.80 and 169,939.80

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Solution

The fourth proportional to 524,671.20, 787,006.80 and 169,939.80 is: 254,909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,671.20 : 787,006.80 = 169,939.80 : x
  2. Step 2: Convert to fraction form
    524,671.20/787,006.80 = 169,939.80/x
  3. Step 3: Cross multiply
    524,671.20x = 787,006.80 × 169,939.80
  4. Step 4: Simplify right side
    524,671.20x = 133,743,778,190.64
  5. Step 5: Solve for x
    x = 133,743,778,190.64/524,671.20
  6. Step 6: Final answer
    x = 254,909.70

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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.