Home / 251,921.28-347,625.64-155,109.76

Finding the Fourth Proportional to 251,921.28, 347,625.64 and 155,109.76

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Solution

The fourth proportional to 251,921.28, 347,625.64 and 155,109.76 is: 214,035.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,921.28 : 347,625.64 = 155,109.76 : x
  2. Step 2: Convert to fraction form
    251,921.28/347,625.64 = 155,109.76/x
  3. Step 3: Cross multiply
    251,921.28x = 347,625.64 × 155,109.76
  4. Step 4: Simplify right side
    251,921.28x = 53,920,129,590.25
  5. Step 5: Solve for x
    x = 53,920,129,590.25/251,921.28
  6. Step 6: Final answer
    x = 214,035.63

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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.