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Finding the Fourth Proportional to 448,218.40, 672,327.60 and 163,908.40

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Solution

The fourth proportional to 448,218.40, 672,327.60 and 163,908.40 is: 245,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,218.40 : 672,327.60 = 163,908.40 : x
  2. Step 2: Convert to fraction form
    448,218.40/672,327.60 = 163,908.40/x
  3. Step 3: Cross multiply
    448,218.40x = 672,327.60 × 163,908.40
  4. Step 4: Simplify right side
    448,218.40x = 110,200,141,191.84
  5. Step 5: Solve for x
    x = 110,200,141,191.84/448,218.40
  6. Step 6: Final answer
    x = 245,862.60

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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.