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Finding the Fourth Proportional to 315,071.83, 434,781.84 and 179,086.87

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Solution

The fourth proportional to 315,071.83, 434,781.84 and 179,086.87 is: 247,130.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,071.83 : 434,781.84 = 179,086.87 : x
  2. Step 2: Convert to fraction form
    315,071.83/434,781.84 = 179,086.87/x
  3. Step 3: Cross multiply
    315,071.83x = 434,781.84 × 179,086.87
  4. Step 4: Simplify right side
    315,071.83x = 77,863,718,858.44
  5. Step 5: Solve for x
    x = 77,863,718,858.44/315,071.83
  6. Step 6: Final answer
    x = 247,130.06

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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.