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Finding the Fourth Proportional to 212,830.80, 319,246.20 and 179,005.20

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Solution

The fourth proportional to 212,830.80, 319,246.20 and 179,005.20 is: 268,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,830.80 : 319,246.20 = 179,005.20 : x
  2. Step 2: Convert to fraction form
    212,830.80/319,246.20 = 179,005.20/x
  3. Step 3: Cross multiply
    212,830.80x = 319,246.20 × 179,005.20
  4. Step 4: Simplify right side
    212,830.80x = 57,146,729,880.24
  5. Step 5: Solve for x
    x = 57,146,729,880.24/212,830.80
  6. Step 6: Final answer
    x = 268,507.80

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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.