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Finding the Fourth Proportional to 299,411.40, 449,445.15 and 187,218.30

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Solution

The fourth proportional to 299,411.40, 449,445.15 and 187,218.30 is: 281,032.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,411.40 : 449,445.15 = 187,218.30 : x
  2. Step 2: Convert to fraction form
    299,411.40/449,445.15 = 187,218.30/x
  3. Step 3: Cross multiply
    299,411.40x = 449,445.15 × 187,218.30
  4. Step 4: Simplify right side
    299,411.40x = 84,144,356,926.25
  5. Step 5: Solve for x
    x = 84,144,356,926.25/299,411.40
  6. Step 6: Final answer
    x = 281,032.58

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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.