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Finding the Fourth Proportional to 199,622.80, 299,434.20 and 136,637.20

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Solution

The fourth proportional to 199,622.80, 299,434.20 and 136,637.20 is: 204,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,622.80 : 299,434.20 = 136,637.20 : x
  2. Step 2: Convert to fraction form
    199,622.80/299,434.20 = 136,637.20/x
  3. Step 3: Cross multiply
    199,622.80x = 299,434.20 × 136,637.20
  4. Step 4: Simplify right side
    199,622.80x = 40,913,850,672.24
  5. Step 5: Solve for x
    x = 40,913,850,672.24/199,622.80
  6. Step 6: Final answer
    x = 204,955.80

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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.