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Finding the Fourth Proportional to 319,612.78, 479,294.52 and 119,824.30

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Solution

The fourth proportional to 319,612.78, 479,294.52 and 119,824.30 is: 179,689.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,612.78 : 479,294.52 = 119,824.30 : x
  2. Step 2: Convert to fraction form
    319,612.78/479,294.52 = 119,824.30/x
  3. Step 3: Cross multiply
    319,612.78x = 479,294.52 × 119,824.30
  4. Step 4: Simplify right side
    319,612.78x = 57,431,130,352.84
  5. Step 5: Solve for x
    x = 57,431,130,352.84/319,612.78
  6. Step 6: Final answer
    x = 179,689.72

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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.