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Finding the Fourth Proportional to 243,123.36, 364,847.94 and 85,352.28

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Solution

The fourth proportional to 243,123.36, 364,847.94 and 85,352.28 is: 128,085.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,123.36 : 364,847.94 = 85,352.28 : x
  2. Step 2: Convert to fraction form
    243,123.36/364,847.94 = 85,352.28/x
  3. Step 3: Cross multiply
    243,123.36x = 364,847.94 × 85,352.28
  4. Step 4: Simplify right side
    243,123.36x = 31,140,603,532.30
  5. Step 5: Solve for x
    x = 31,140,603,532.30/243,123.36
  6. Step 6: Final answer
    x = 128,085.61

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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.