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Finding the Fourth Proportional to 448,998.40, 619,819.86 and 296,127.28

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Solution

The fourth proportional to 448,998.40, 619,819.86 and 296,127.28 is: 408,788.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,998.40 : 619,819.86 = 296,127.28 : x
  2. Step 2: Convert to fraction form
    448,998.40/619,819.86 = 296,127.28/x
  3. Step 3: Cross multiply
    448,998.40x = 619,819.86 × 296,127.28
  4. Step 4: Simplify right side
    448,998.40x = 183,545,569,231.78
  5. Step 5: Solve for x
    x = 183,545,569,231.78/448,998.40
  6. Step 6: Final answer
    x = 408,788.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.