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Finding the Fourth Proportional to 305,243.33, 420,750.32 and 240,607.76

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Solution

The fourth proportional to 305,243.33, 420,750.32 and 240,607.76 is: 331,656.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,243.33 : 420,750.32 = 240,607.76 : x
  2. Step 2: Convert to fraction form
    305,243.33/420,750.32 = 240,607.76/x
  3. Step 3: Cross multiply
    305,243.33x = 420,750.32 × 240,607.76
  4. Step 4: Simplify right side
    305,243.33x = 101,235,788,707.69
  5. Step 5: Solve for x
    x = 101,235,788,707.69/305,243.33
  6. Step 6: Final answer
    x = 331,656.03

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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.