Home / 428,944.80-643,207.56-176,157.72

Finding the Fourth Proportional to 428,944.80, 643,207.56 and 176,157.72

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Solution

The fourth proportional to 428,944.80, 643,207.56 and 176,157.72 is: 264,150.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,944.80 : 643,207.56 = 176,157.72 : x
  2. Step 2: Convert to fraction form
    428,944.80/643,207.56 = 176,157.72/x
  3. Step 3: Cross multiply
    428,944.80x = 643,207.56 × 176,157.72
  4. Step 4: Simplify right side
    428,944.80x = 113,305,977,256.36
  5. Step 5: Solve for x
    x = 113,305,977,256.36/428,944.80
  6. Step 6: Final answer
    x = 264,150.49

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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.