Home / 487,524.10-731,377.68-221,303.34

Finding the Fourth Proportional to 487,524.10, 731,377.68 and 221,303.34

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Solution

The fourth proportional to 487,524.10, 731,377.68 and 221,303.34 is: 331,996.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,524.10 : 731,377.68 = 221,303.34 : x
  2. Step 2: Convert to fraction form
    487,524.10/731,377.68 = 221,303.34/x
  3. Step 3: Cross multiply
    487,524.10x = 731,377.68 × 221,303.34
  4. Step 4: Simplify right side
    487,524.10x = 161,856,323,385.45
  5. Step 5: Solve for x
    x = 161,856,323,385.45/487,524.10
  6. Step 6: Final answer
    x = 331,996.56

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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.