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Finding the Fourth Proportional to 538,430.88, 807,778.08 and 272,185.32

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Solution

The fourth proportional to 538,430.88, 807,778.08 and 272,185.32 is: 408,344.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,430.88 : 807,778.08 = 272,185.32 : x
  2. Step 2: Convert to fraction form
    538,430.88/807,778.08 = 272,185.32/x
  3. Step 3: Cross multiply
    538,430.88x = 807,778.08 × 272,185.32
  4. Step 4: Simplify right side
    538,430.88x = 219,865,335,193.79
  5. Step 5: Solve for x
    x = 219,865,335,193.79/538,430.88
  6. Step 6: Final answer
    x = 408,344.59

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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.