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Finding the Fourth Proportional to 243,427.78, 365,104.72 and 85,619.35

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Solution

The fourth proportional to 243,427.78, 365,104.72 and 85,619.35 is: 128,416.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,427.78 : 365,104.72 = 85,619.35 : x
  2. Step 2: Convert to fraction form
    243,427.78/365,104.72 = 85,619.35/x
  3. Step 3: Cross multiply
    243,427.78x = 365,104.72 × 85,619.35
  4. Step 4: Simplify right side
    243,427.78x = 31,260,028,808.33
  5. Step 5: Solve for x
    x = 31,260,028,808.33/243,427.78
  6. Step 6: Final answer
    x = 128,416.03

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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.