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Finding the Fourth Proportional to 448,649.70, 671,393.73 and 280,249.32

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Solution

The fourth proportional to 448,649.70, 671,393.73 and 280,249.32 is: 419,386.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,649.70 : 671,393.73 = 280,249.32 : x
  2. Step 2: Convert to fraction form
    448,649.70/671,393.73 = 280,249.32/x
  3. Step 3: Cross multiply
    448,649.70x = 671,393.73 × 280,249.32
  4. Step 4: Simplify right side
    448,649.70x = 188,157,636,284.76
  5. Step 5: Solve for x
    x = 188,157,636,284.76/448,649.70
  6. Step 6: Final answer
    x = 419,386.52

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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.