Home / 379,934.20-569,901.18-143,221.53

Finding the Fourth Proportional to 379,934.20, 569,901.18 and 143,221.53

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Solution

The fourth proportional to 379,934.20, 569,901.18 and 143,221.53 is: 214,832.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,934.20 : 569,901.18 = 143,221.53 : x
  2. Step 2: Convert to fraction form
    379,934.20/569,901.18 = 143,221.53/x
  3. Step 3: Cross multiply
    379,934.20x = 569,901.18 × 143,221.53
  4. Step 4: Simplify right side
    379,934.20x = 81,622,118,948.41
  5. Step 5: Solve for x
    x = 81,622,118,948.41/379,934.20
  6. Step 6: Final answer
    x = 214,832.25

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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.