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Finding the Fourth Proportional to 310,602.12, 428,062.50 and 225,571.56

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Solution

The fourth proportional to 310,602.12, 428,062.50 and 225,571.56 is: 310,875.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,602.12 : 428,062.50 = 225,571.56 : x
  2. Step 2: Convert to fraction form
    310,602.12/428,062.50 = 225,571.56/x
  3. Step 3: Cross multiply
    310,602.12x = 428,062.50 × 225,571.56
  4. Step 4: Simplify right side
    310,602.12x = 96,558,725,902.50
  5. Step 5: Solve for x
    x = 96,558,725,902.50/310,602.12
  6. Step 6: Final answer
    x = 310,875.94

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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.