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Finding the Fourth Proportional to 310,881.56, 428,985.96 and 174,912.53

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Solution

The fourth proportional to 310,881.56, 428,985.96 and 174,912.53 is: 241,362.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,881.56 : 428,985.96 = 174,912.53 : x
  2. Step 2: Convert to fraction form
    310,881.56/428,985.96 = 174,912.53/x
  3. Step 3: Cross multiply
    310,881.56x = 428,985.96 × 174,912.53
  4. Step 4: Simplify right side
    310,881.56x = 75,035,017,453.15
  5. Step 5: Solve for x
    x = 75,035,017,453.15/310,881.56
  6. Step 6: Final answer
    x = 241,362.08

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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.