Home / 389,638.30-584,311.65-136,821.10

Finding the Fourth Proportional to 389,638.30, 584,311.65 and 136,821.10

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Solution

The fourth proportional to 389,638.30, 584,311.65 and 136,821.10 is: 205,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,638.30 : 584,311.65 = 136,821.10 : x
  2. Step 2: Convert to fraction form
    389,638.30/584,311.65 = 136,821.10/x
  3. Step 3: Cross multiply
    389,638.30x = 584,311.65 × 136,821.10
  4. Step 4: Simplify right side
    389,638.30x = 79,946,162,695.82
  5. Step 5: Solve for x
    x = 79,946,162,695.82/389,638.30
  6. Step 6: Final answer
    x = 205,180.45

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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.