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Finding the Fourth Proportional to 448,225.40, 672,338.10 and 163,915.40

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Solution

The fourth proportional to 448,225.40, 672,338.10 and 163,915.40 is: 245,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,225.40 : 672,338.10 = 163,915.40 : x
  2. Step 2: Convert to fraction form
    448,225.40/672,338.10 = 163,915.40/x
  3. Step 3: Cross multiply
    448,225.40x = 672,338.10 × 163,915.40
  4. Step 4: Simplify right side
    448,225.40x = 110,206,568,596.74
  5. Step 5: Solve for x
    x = 110,206,568,596.74/448,225.40
  6. Step 6: Final answer
    x = 245,873.10

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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.