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Finding the Fourth Proportional to 309,760.83, 427,620.12 and 207,749.01

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Solution

The fourth proportional to 309,760.83, 427,620.12 and 207,749.01 is: 286,794.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,760.83 : 427,620.12 = 207,749.01 : x
  2. Step 2: Convert to fraction form
    309,760.83/427,620.12 = 207,749.01/x
  3. Step 3: Cross multiply
    309,760.83x = 427,620.12 × 207,749.01
  4. Step 4: Simplify right side
    309,760.83x = 88,837,656,586.08
  5. Step 5: Solve for x
    x = 88,837,656,586.08/309,760.83
  6. Step 6: Final answer
    x = 286,794.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.