Home / 379,278.54-569,142.25-139,560.77

Finding the Fourth Proportional to 379,278.54, 569,142.25 and 139,560.77

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Solution

The fourth proportional to 379,278.54, 569,142.25 and 139,560.77 is: 209,423.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,278.54 : 569,142.25 = 139,560.77 : x
  2. Step 2: Convert to fraction form
    379,278.54/569,142.25 = 139,560.77/x
  3. Step 3: Cross multiply
    379,278.54x = 569,142.25 × 139,560.77
  4. Step 4: Simplify right side
    379,278.54x = 79,429,930,649.53
  5. Step 5: Solve for x
    x = 79,429,930,649.53/379,278.54
  6. Step 6: Final answer
    x = 209,423.74

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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.