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Finding the Fourth Proportional to 199,630.79, 299,143.20 and 146,358.24

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Solution

The fourth proportional to 199,630.79, 299,143.20 and 146,358.24 is: 219,315.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,630.79 : 299,143.20 = 146,358.24 : x
  2. Step 2: Convert to fraction form
    199,630.79/299,143.20 = 146,358.24/x
  3. Step 3: Cross multiply
    199,630.79x = 299,143.20 × 146,358.24
  4. Step 4: Simplify right side
    199,630.79x = 43,782,072,259.97
  5. Step 5: Solve for x
    x = 43,782,072,259.97/199,630.79
  6. Step 6: Final answer
    x = 219,315.23

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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.