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Finding the Fourth Proportional to 448,008.49, 671,906.62 and 128,150.51

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Solution

The fourth proportional to 448,008.49, 671,906.62 and 128,150.51 is: 192,195.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,008.49 : 671,906.62 = 128,150.51 : x
  2. Step 2: Convert to fraction form
    448,008.49/671,906.62 = 128,150.51/x
  3. Step 3: Cross multiply
    448,008.49x = 671,906.62 × 128,150.51
  4. Step 4: Simplify right side
    448,008.49x = 86,105,177,384.77
  5. Step 5: Solve for x
    x = 86,105,177,384.77/448,008.49
  6. Step 6: Final answer
    x = 192,195.42

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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.