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Finding the Fourth Proportional to 292,729.80, 439,094.70 and 115,139.73

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Solution

The fourth proportional to 292,729.80, 439,094.70 and 115,139.73 is: 172,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,729.80 : 439,094.70 = 115,139.73 : x
  2. Step 2: Convert to fraction form
    292,729.80/439,094.70 = 115,139.73/x
  3. Step 3: Cross multiply
    292,729.80x = 439,094.70 × 115,139.73
  4. Step 4: Simplify right side
    292,729.80x = 50,557,245,202.43
  5. Step 5: Solve for x
    x = 50,557,245,202.43/292,729.80
  6. Step 6: Final answer
    x = 172,709.60

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1.5x scale

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.