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Finding the Fourth Proportional to 319,175.20, 478,647.60 and 161,351.20

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Solution

The fourth proportional to 319,175.20, 478,647.60 and 161,351.20 is: 241,968.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,175.20 : 478,647.60 = 161,351.20 : x
  2. Step 2: Convert to fraction form
    319,175.20/478,647.60 = 161,351.20/x
  3. Step 3: Cross multiply
    319,175.20x = 478,647.60 × 161,351.20
  4. Step 4: Simplify right side
    319,175.20x = 77,230,364,637.12
  5. Step 5: Solve for x
    x = 77,230,364,637.12/319,175.20
  6. Step 6: Final answer
    x = 241,968.56

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1.5x scale

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.