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Finding the Fourth Proportional to 299,390.48, 449,034.68 and 99,688.22

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Solution

The fourth proportional to 299,390.48, 449,034.68 and 99,688.22 is: 149,515.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,390.48 : 449,034.68 = 99,688.22 : x
  2. Step 2: Convert to fraction form
    299,390.48/449,034.68 = 99,688.22/x
  3. Step 3: Cross multiply
    299,390.48x = 449,034.68 × 99,688.22
  4. Step 4: Simplify right side
    299,390.48x = 44,763,467,967.47
  5. Step 5: Solve for x
    x = 44,763,467,967.47/299,390.48
  6. Step 6: Final answer
    x = 149,515.34

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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.