Home / 379,276.54-569,139.25-139,558.77

Finding the Fourth Proportional to 379,276.54, 569,139.25 and 139,558.77

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Solution

The fourth proportional to 379,276.54, 569,139.25 and 139,558.77 is: 209,420.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,276.54 : 569,139.25 = 139,558.77 : x
  2. Step 2: Convert to fraction form
    379,276.54/569,139.25 = 139,558.77/x
  3. Step 3: Cross multiply
    379,276.54x = 569,139.25 × 139,558.77
  4. Step 4: Simplify right side
    379,276.54x = 79,428,372,990.93
  5. Step 5: Solve for x
    x = 79,428,372,990.93/379,276.54
  6. Step 6: Final answer
    x = 209,420.74

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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.