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Finding the Fourth Proportional to 115,298.40, 172,918.80 and 44,205.60

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Solution

The fourth proportional to 115,298.40, 172,918.80 and 44,205.60 is: 66,297.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,298.40 : 172,918.80 = 44,205.60 : x
  2. Step 2: Convert to fraction form
    115,298.40/172,918.80 = 44,205.60/x
  3. Step 3: Cross multiply
    115,298.40x = 172,918.80 × 44,205.60
  4. Step 4: Simplify right side
    115,298.40x = 7,643,979,305.28
  5. Step 5: Solve for x
    x = 7,643,979,305.28/115,298.40
  6. Step 6: Final answer
    x = 66,297.36

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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.