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Finding the Fourth Proportional to 510,400.98, 765,438.20 and 168,780.96

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Solution

The fourth proportional to 510,400.98, 765,438.20 and 168,780.96 is: 253,117.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,400.98 : 765,438.20 = 168,780.96 : x
  2. Step 2: Convert to fraction form
    510,400.98/765,438.20 = 168,780.96/x
  3. Step 3: Cross multiply
    510,400.98x = 765,438.20 × 168,780.96
  4. Step 4: Simplify right side
    510,400.98x = 129,191,394,216.67
  5. Step 5: Solve for x
    x = 129,191,394,216.67/510,400.98
  6. Step 6: Final answer
    x = 253,117.45

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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.