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Finding the Fourth Proportional to 379,959.80, 570,053.82 and 113,729

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Solution

The fourth proportional to 379,959.80, 570,053.82 and 113,729 is: 170,627.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,959.80 : 570,053.82 = 113,729 : x
  2. Step 2: Convert to fraction form
    379,959.80/570,053.82 = 113,729/x
  3. Step 3: Cross multiply
    379,959.80x = 570,053.82 × 113,729
  4. Step 4: Simplify right side
    379,959.80x = 64,831,650,894.78
  5. Step 5: Solve for x
    x = 64,831,650,894.78/379,959.80
  6. Step 6: Final answer
    x = 170,627.66

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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.