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Finding the Fourth Proportional to 299,430.10, 449,145.15 and 187,820.20

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Solution

The fourth proportional to 299,430.10, 449,145.15 and 187,820.20 is: 281,730.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,430.10 : 449,145.15 = 187,820.20 : x
  2. Step 2: Convert to fraction form
    299,430.10/449,145.15 = 187,820.20/x
  3. Step 3: Cross multiply
    299,430.10x = 449,145.15 × 187,820.20
  4. Step 4: Simplify right side
    299,430.10x = 84,358,531,902.03
  5. Step 5: Solve for x
    x = 84,358,531,902.03/299,430.10
  6. Step 6: Final answer
    x = 281,730.30

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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.