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Finding the Fourth Proportional to 389,092.71, 536,956.16 and 219,326.79

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Solution

The fourth proportional to 389,092.71, 536,956.16 and 219,326.79 is: 302,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,092.71 : 536,956.16 = 219,326.79 : x
  2. Step 2: Convert to fraction form
    389,092.71/536,956.16 = 219,326.79/x
  3. Step 3: Cross multiply
    389,092.71x = 536,956.16 × 219,326.79
  4. Step 4: Simplify right side
    389,092.71x = 117,768,869,846.89
  5. Step 5: Solve for x
    x = 117,768,869,846.89/389,092.71
  6. Step 6: Final answer
    x = 302,675.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.