Home / 319,540.20-478,727.10-194,735.40

Finding the Fourth Proportional to 319,540.20, 478,727.10 and 194,735.40

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Solution

The fourth proportional to 319,540.20, 478,727.10 and 194,735.40 is: 291,747.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,540.20 : 478,727.10 = 194,735.40 : x
  2. Step 2: Convert to fraction form
    319,540.20/478,727.10 = 194,735.40/x
  3. Step 3: Cross multiply
    319,540.20x = 478,727.10 × 194,735.40
  4. Step 4: Simplify right side
    319,540.20x = 93,225,113,309.34
  5. Step 5: Solve for x
    x = 93,225,113,309.34/319,540.20
  6. Step 6: Final answer
    x = 291,747.68

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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.