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Finding the Fourth Proportional to 525,678.80, 788,086.20 and 226,389.20

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Solution

The fourth proportional to 525,678.80, 788,086.20 and 226,389.20 is: 339,397.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,678.80 : 788,086.20 = 226,389.20 : x
  2. Step 2: Convert to fraction form
    525,678.80/788,086.20 = 226,389.20/x
  3. Step 3: Cross multiply
    525,678.80x = 788,086.20 × 226,389.20
  4. Step 4: Simplify right side
    525,678.80x = 178,414,204,349.04
  5. Step 5: Solve for x
    x = 178,414,204,349.04/525,678.80
  6. Step 6: Final answer
    x = 339,397.75

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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.