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Finding the Fourth Proportional to 309,276.81, 426,794.75 and 181,960.59

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Solution

The fourth proportional to 309,276.81, 426,794.75 and 181,960.59 is: 251,101.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,276.81 : 426,794.75 = 181,960.59 : x
  2. Step 2: Convert to fraction form
    309,276.81/426,794.75 = 181,960.59/x
  3. Step 3: Cross multiply
    309,276.81x = 426,794.75 × 181,960.59
  4. Step 4: Simplify right side
    309,276.81x = 77,659,824,518.90
  5. Step 5: Solve for x
    x = 77,659,824,518.90/309,276.81
  6. Step 6: Final answer
    x = 251,101.35

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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.