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Finding the Fourth Proportional to 315,750.37, 435,741.78 and 172,519.30

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Solution

The fourth proportional to 315,750.37, 435,741.78 and 172,519.30 is: 238,080.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,750.37 : 435,741.78 = 172,519.30 : x
  2. Step 2: Convert to fraction form
    315,750.37/435,741.78 = 172,519.30/x
  3. Step 3: Cross multiply
    315,750.37x = 435,741.78 × 172,519.30
  4. Step 4: Simplify right side
    315,750.37x = 75,173,866,866.35
  5. Step 5: Solve for x
    x = 75,173,866,866.35/315,750.37
  6. Step 6: Final answer
    x = 238,080.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.