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Finding the Fourth Proportional to 448,266.40, 672,399.60 and 163,956.40

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Solution

The fourth proportional to 448,266.40, 672,399.60 and 163,956.40 is: 245,934.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,266.40 : 672,399.60 = 163,956.40 : x
  2. Step 2: Convert to fraction form
    448,266.40/672,399.60 = 163,956.40/x
  3. Step 3: Cross multiply
    448,266.40x = 672,399.60 × 163,956.40
  4. Step 4: Simplify right side
    448,266.40x = 110,244,217,777.44
  5. Step 5: Solve for x
    x = 110,244,217,777.44/448,266.40
  6. Step 6: Final answer
    x = 245,934.60

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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.