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Finding the Fourth Proportional to 448,483.32, 672,343.97 and 208,736.45

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Solution

The fourth proportional to 448,483.32, 672,343.97 and 208,736.45 is: 312,927.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,483.32 : 672,343.97 = 208,736.45 : x
  2. Step 2: Convert to fraction form
    448,483.32/672,343.97 = 208,736.45/x
  3. Step 3: Cross multiply
    448,483.32x = 672,343.97 × 208,736.45
  4. Step 4: Simplify right side
    448,483.32x = 140,342,689,071.30
  5. Step 5: Solve for x
    x = 140,342,689,071.30/448,483.32
  6. Step 6: Final answer
    x = 312,927.33

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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.