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Finding the Fourth Proportional to 347,608.58, 479,452.30 and 319,020.44

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Solution

The fourth proportional to 347,608.58, 479,452.30 and 319,020.44 is: 440,021.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,608.58 : 479,452.30 = 319,020.44 : x
  2. Step 2: Convert to fraction form
    347,608.58/479,452.30 = 319,020.44/x
  3. Step 3: Cross multiply
    347,608.58x = 479,452.30 × 319,020.44
  4. Step 4: Simplify right side
    347,608.58x = 152,955,080,510.20
  5. Step 5: Solve for x
    x = 152,955,080,510.20/347,608.58
  6. Step 6: Final answer
    x = 440,021.02

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Double scale
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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.