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Finding the Fourth Proportional to 508,708.05, 763,003.29 and 268,725.80

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Solution

The fourth proportional to 508,708.05, 763,003.29 and 268,725.80 is: 403,057.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,708.05 : 763,003.29 = 268,725.80 : x
  2. Step 2: Convert to fraction form
    508,708.05/763,003.29 = 268,725.80/x
  3. Step 3: Cross multiply
    508,708.05x = 763,003.29 × 268,725.80
  4. Step 4: Simplify right side
    508,708.05x = 205,038,672,423.11
  5. Step 5: Solve for x
    x = 205,038,672,423.11/508,708.05
  6. Step 6: Final answer
    x = 403,057.66

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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.