Home / 428,945.50-643,461.99-148,461.94

Finding the Fourth Proportional to 428,945.50, 643,461.99 and 148,461.94

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Solution

The fourth proportional to 428,945.50, 643,461.99 and 148,461.94 is: 222,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,945.50 : 643,461.99 = 148,461.94 : x
  2. Step 2: Convert to fraction form
    428,945.50/643,461.99 = 148,461.94/x
  3. Step 3: Cross multiply
    428,945.50x = 643,461.99 × 148,461.94
  4. Step 4: Simplify right side
    428,945.50x = 95,529,615,351.66
  5. Step 5: Solve for x
    x = 95,529,615,351.66/428,945.50
  6. Step 6: Final answer
    x = 222,708.05

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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.