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Finding the Fourth Proportional to 199,480.79, 298,962.66 and 81,014.51

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Solution

The fourth proportional to 199,480.79, 298,962.66 and 81,014.51 is: 121,416.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,480.79 : 298,962.66 = 81,014.51 : x
  2. Step 2: Convert to fraction form
    199,480.79/298,962.66 = 81,014.51/x
  3. Step 3: Cross multiply
    199,480.79x = 298,962.66 × 81,014.51
  4. Step 4: Simplify right side
    199,480.79x = 24,220,313,408.20
  5. Step 5: Solve for x
    x = 24,220,313,408.20/199,480.79
  6. Step 6: Final answer
    x = 121,416.77

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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.