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Finding the Fourth Proportional to 299,381.12, 449,155.92 and 130,916.24

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Solution

The fourth proportional to 299,381.12, 449,155.92 and 130,916.24 is: 196,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,381.12 : 449,155.92 = 130,916.24 : x
  2. Step 2: Convert to fraction form
    299,381.12/449,155.92 = 130,916.24/x
  3. Step 3: Cross multiply
    299,381.12x = 449,155.92 × 130,916.24
  4. Step 4: Simplify right side
    299,381.12x = 58,801,804,220.14
  5. Step 5: Solve for x
    x = 58,801,804,220.14/299,381.12
  6. Step 6: Final answer
    x = 196,411.20

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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.