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Finding the Fourth Proportional to 299,316.20, 448,974.30 and 187,341.80

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Solution

The fourth proportional to 299,316.20, 448,974.30 and 187,341.80 is: 281,012.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,316.20 : 448,974.30 = 187,341.80 : x
  2. Step 2: Convert to fraction form
    299,316.20/448,974.30 = 187,341.80/x
  3. Step 3: Cross multiply
    299,316.20x = 448,974.30 × 187,341.80
  4. Step 4: Simplify right side
    299,316.20x = 84,111,653,515.74
  5. Step 5: Solve for x
    x = 84,111,653,515.74/299,316.20
  6. Step 6: Final answer
    x = 281,012.70

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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.