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Finding the Fourth Proportional to 508,916.80, 763,375.20 and 228,980.80

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Solution

The fourth proportional to 508,916.80, 763,375.20 and 228,980.80 is: 343,471.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,916.80 : 763,375.20 = 228,980.80 : x
  2. Step 2: Convert to fraction form
    508,916.80/763,375.20 = 228,980.80/x
  3. Step 3: Cross multiply
    508,916.80x = 763,375.20 × 228,980.80
  4. Step 4: Simplify right side
    508,916.80x = 174,798,263,996.16
  5. Step 5: Solve for x
    x = 174,798,263,996.16/508,916.80
  6. Step 6: Final answer
    x = 343,471.20

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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.