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Finding the Fourth Proportional to 389,101.91, 536,955.82 and 219,336.03

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Solution

The fourth proportional to 389,101.91, 536,955.82 and 219,336.03 is: 302,681.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,101.91 : 536,955.82 = 219,336.03 : x
  2. Step 2: Convert to fraction form
    389,101.91/536,955.82 = 219,336.03/x
  3. Step 3: Cross multiply
    389,101.91x = 536,955.82 × 219,336.03
  4. Step 4: Simplify right side
    389,101.91x = 117,773,757,295.86
  5. Step 5: Solve for x
    x = 117,773,757,295.86/389,101.91
  6. Step 6: Final answer
    x = 302,681.01

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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.