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Finding the Fourth Proportional to 389,113.50, 536,984.84 and 219,347.63

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Solution

The fourth proportional to 389,113.50, 536,984.84 and 219,347.63 is: 302,704.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,113.50 : 536,984.84 = 219,347.63 : x
  2. Step 2: Convert to fraction form
    389,113.50/536,984.84 = 219,347.63/x
  3. Step 3: Cross multiply
    389,113.50x = 536,984.84 × 219,347.63
  4. Step 4: Simplify right side
    389,113.50x = 117,786,348,218.27
  5. Step 5: Solve for x
    x = 117,786,348,218.27/389,113.50
  6. Step 6: Final answer
    x = 302,704.35

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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.