Home / 448,478.56-672,336.82-208,731.69

Finding the Fourth Proportional to 448,478.56, 672,336.82 and 208,731.69

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Solution

The fourth proportional to 448,478.56, 672,336.82 and 208,731.69 is: 312,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,478.56 : 672,336.82 = 208,731.69 : x
  2. Step 2: Convert to fraction form
    448,478.56/672,336.82 = 208,731.69/x
  3. Step 3: Cross multiply
    448,478.56x = 672,336.82 × 208,731.69
  4. Step 4: Simplify right side
    448,478.56x = 140,338,000,948.74
  5. Step 5: Solve for x
    x = 140,338,000,948.74/448,478.56
  6. Step 6: Final answer
    x = 312,920.20

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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.