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Finding the Fourth Proportional to 448,497.49, 672,185.77 and 320,214.76

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Solution

The fourth proportional to 448,497.49, 672,185.77 and 320,214.76 is: 479,921.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,497.49 : 672,185.77 = 320,214.76 : x
  2. Step 2: Convert to fraction form
    448,497.49/672,185.77 = 320,214.76/x
  3. Step 3: Cross multiply
    448,497.49x = 672,185.77 × 320,214.76
  4. Step 4: Simplify right side
    448,497.49x = 215,243,805,015.97
  5. Step 5: Solve for x
    x = 215,243,805,015.97/448,497.49
  6. Step 6: Final answer
    x = 479,921.98

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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.