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Finding the Fourth Proportional to 319,616.10, 479,482.56 and 248,115.78

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Solution

The fourth proportional to 319,616.10, 479,482.56 and 248,115.78 is: 372,219.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,616.10 : 479,482.56 = 248,115.78 : x
  2. Step 2: Convert to fraction form
    319,616.10/479,482.56 = 248,115.78/x
  3. Step 3: Cross multiply
    319,616.10x = 479,482.56 × 248,115.78
  4. Step 4: Simplify right side
    319,616.10x = 118,967,189,370.80
  5. Step 5: Solve for x
    x = 118,967,189,370.80/319,616.10
  6. Step 6: Final answer
    x = 372,219.01

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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.