Home / 487,650.12-731,764.08-221,406.63

Finding the Fourth Proportional to 487,650.12, 731,764.08 and 221,406.63

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Solution

The fourth proportional to 487,650.12, 731,764.08 and 221,406.63 is: 332,241.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,650.12 : 731,764.08 = 221,406.63 : x
  2. Step 2: Convert to fraction form
    487,650.12/731,764.08 = 221,406.63/x
  3. Step 3: Cross multiply
    487,650.12x = 731,764.08 × 221,406.63
  4. Step 4: Simplify right side
    487,650.12x = 162,017,418,907.85
  5. Step 5: Solve for x
    x = 162,017,418,907.85/487,650.12
  6. Step 6: Final answer
    x = 332,241.11

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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.