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Finding the Fourth Proportional to 309,667.72, 426,847.56 and 233,071.64

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Solution

The fourth proportional to 309,667.72, 426,847.56 and 233,071.64 is: 321,267.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,667.72 : 426,847.56 = 233,071.64 : x
  2. Step 2: Convert to fraction form
    309,667.72/426,847.56 = 233,071.64/x
  3. Step 3: Cross multiply
    309,667.72x = 426,847.56 × 233,071.64
  4. Step 4: Simplify right side
    309,667.72x = 99,486,060,839.20
  5. Step 5: Solve for x
    x = 99,486,060,839.20/309,667.72
  6. Step 6: Final answer
    x = 321,267.13

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1.5x scale

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.