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Finding the Fourth Proportional to 448,215.40, 672,323.10 and 163,905.40

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Solution

The fourth proportional to 448,215.40, 672,323.10 and 163,905.40 is: 245,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,215.40 : 672,323.10 = 163,905.40 : x
  2. Step 2: Convert to fraction form
    448,215.40/672,323.10 = 163,905.40/x
  3. Step 3: Cross multiply
    448,215.40x = 672,323.10 × 163,905.40
  4. Step 4: Simplify right side
    448,215.40x = 110,197,386,634.74
  5. Step 5: Solve for x
    x = 110,197,386,634.74/448,215.40
  6. Step 6: Final answer
    x = 245,858.10

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Similar ratio
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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.