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Finding the Fourth Proportional to 319,093.30, 440,348.85 and 173,899.15

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Solution

The fourth proportional to 319,093.30, 440,348.85 and 173,899.15 is: 239,980.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,093.30 : 440,348.85 = 173,899.15 : x
  2. Step 2: Convert to fraction form
    319,093.30/440,348.85 = 173,899.15/x
  3. Step 3: Cross multiply
    319,093.30x = 440,348.85 × 173,899.15
  4. Step 4: Simplify right side
    319,093.30x = 76,576,290,718.48
  5. Step 5: Solve for x
    x = 76,576,290,718.48/319,093.30
  6. Step 6: Final answer
    x = 239,980.88

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1.5x scale

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.