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Finding the Fourth Proportional to 151,304.79, 208,811.71 and 108,288.32

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Solution

The fourth proportional to 151,304.79, 208,811.71 and 108,288.32 is: 149,445.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,304.79 : 208,811.71 = 108,288.32 : x
  2. Step 2: Convert to fraction form
    151,304.79/208,811.71 = 108,288.32/x
  3. Step 3: Cross multiply
    151,304.79x = 208,811.71 × 108,288.32
  4. Step 4: Simplify right side
    151,304.79x = 22,611,869,272.23
  5. Step 5: Solve for x
    x = 22,611,869,272.23/151,304.79
  6. Step 6: Final answer
    x = 149,445.83

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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.