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Finding the Fourth Proportional to 243,745.35, 365,745.50 and 99,758.05

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Solution

The fourth proportional to 243,745.35, 365,745.50 and 99,758.05 is: 149,689.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,745.35 : 365,745.50 = 99,758.05 : x
  2. Step 2: Convert to fraction form
    243,745.35/365,745.50 = 99,758.05/x
  3. Step 3: Cross multiply
    243,745.35x = 365,745.50 × 99,758.05
  4. Step 4: Simplify right side
    243,745.35x = 36,486,056,837.21
  5. Step 5: Solve for x
    x = 36,486,056,837.21/243,745.35
  6. Step 6: Final answer
    x = 149,689.24

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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.