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Finding the Fourth Proportional to 199,434.60, 299,315.10 and 197,879.40

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Solution

The fourth proportional to 199,434.60, 299,315.10 and 197,879.40 is: 296,981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,434.60 : 299,315.10 = 197,879.40 : x
  2. Step 2: Convert to fraction form
    199,434.60/299,315.10 = 197,879.40/x
  3. Step 3: Cross multiply
    199,434.60x = 299,315.10 × 197,879.40
  4. Step 4: Simplify right side
    199,434.60x = 59,228,292,398.94
  5. Step 5: Solve for x
    x = 59,228,292,398.94/199,434.60
  6. Step 6: Final answer
    x = 296,981.03

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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.