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Finding the Fourth Proportional to 315,376.64, 435,276.20 and 188,060.44

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Solution

The fourth proportional to 315,376.64, 435,276.20 and 188,060.44 is: 259,557.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,376.64 : 435,276.20 = 188,060.44 : x
  2. Step 2: Convert to fraction form
    315,376.64/435,276.20 = 188,060.44/x
  3. Step 3: Cross multiply
    315,376.64x = 435,276.20 × 188,060.44
  4. Step 4: Simplify right side
    315,376.64x = 81,858,233,693.53
  5. Step 5: Solve for x
    x = 81,858,233,693.53/315,376.64
  6. Step 6: Final answer
    x = 259,557.06

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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.