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Finding the Fourth Proportional to 379,548.83, 569,129.76 and 126,738.52

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Solution

The fourth proportional to 379,548.83, 569,129.76 and 126,738.52 is: 190,043.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,548.83 : 569,129.76 = 126,738.52 : x
  2. Step 2: Convert to fraction form
    379,548.83/569,129.76 = 126,738.52/x
  3. Step 3: Cross multiply
    379,548.83x = 569,129.76 × 126,738.52
  4. Step 4: Simplify right side
    379,548.83x = 72,130,662,047.53
  5. Step 5: Solve for x
    x = 72,130,662,047.53/379,548.83
  6. Step 6: Final answer
    x = 190,043.17

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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.