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Finding the Fourth Proportional to 298,045.20, 447,067.80 and 219,507.60

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Solution

The fourth proportional to 298,045.20, 447,067.80 and 219,507.60 is: 329,261.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,045.20 : 447,067.80 = 219,507.60 : x
  2. Step 2: Convert to fraction form
    298,045.20/447,067.80 = 219,507.60/x
  3. Step 3: Cross multiply
    298,045.20x = 447,067.80 × 219,507.60
  4. Step 4: Simplify right side
    298,045.20x = 98,134,779,815.28
  5. Step 5: Solve for x
    x = 98,134,779,815.28/298,045.20
  6. Step 6: Final answer
    x = 329,261.40

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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.