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Finding the Fourth Proportional to 203,530.06, 305,322.88 and 70,374.56

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Solution

The fourth proportional to 203,530.06, 305,322.88 and 70,374.56 is: 105,571.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,530.06 : 305,322.88 = 70,374.56 : x
  2. Step 2: Convert to fraction form
    203,530.06/305,322.88 = 70,374.56/x
  3. Step 3: Cross multiply
    203,530.06x = 305,322.88 × 70,374.56
  4. Step 4: Simplify right side
    203,530.06x = 21,486,963,337.93
  5. Step 5: Solve for x
    x = 21,486,963,337.93/203,530.06
  6. Step 6: Final answer
    x = 105,571.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.