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Finding the Fourth Proportional to 524,672.20, 787,008.30 and 169,940.80

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Solution

The fourth proportional to 524,672.20, 787,008.30 and 169,940.80 is: 254,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,672.20 : 787,008.30 = 169,940.80 : x
  2. Step 2: Convert to fraction form
    524,672.20/787,008.30 = 169,940.80/x
  3. Step 3: Cross multiply
    524,672.20x = 787,008.30 × 169,940.80
  4. Step 4: Simplify right side
    524,672.20x = 133,744,820,108.64
  5. Step 5: Solve for x
    x = 133,744,820,108.64/524,672.20
  6. Step 6: Final answer
    x = 254,911.20

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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.