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Finding the Fourth Proportional to 448,496.49, 672,184.27 and 320,213.76

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Solution

The fourth proportional to 448,496.49, 672,184.27 and 320,213.76 is: 479,920.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,496.49 : 672,184.27 = 320,213.76 : x
  2. Step 2: Convert to fraction form
    448,496.49/672,184.27 = 320,213.76/x
  3. Step 3: Cross multiply
    448,496.49x = 672,184.27 × 320,213.76
  4. Step 4: Simplify right side
    448,496.49x = 215,242,650,389.13
  5. Step 5: Solve for x
    x = 215,242,650,389.13/448,496.49
  6. Step 6: Final answer
    x = 479,920.48

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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.