Home / 428,997.16-643,113.34-162,944.50

Finding the Fourth Proportional to 428,997.16, 643,113.34 and 162,944.50

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Solution

The fourth proportional to 428,997.16, 643,113.34 and 162,944.50 is: 244,271.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,997.16 : 643,113.34 = 162,944.50 : x
  2. Step 2: Convert to fraction form
    428,997.16/643,113.34 = 162,944.50/x
  3. Step 3: Cross multiply
    428,997.16x = 643,113.34 × 162,944.50
  4. Step 4: Simplify right side
    428,997.16x = 104,791,781,629.63
  5. Step 5: Solve for x
    x = 104,791,781,629.63/428,997.16
  6. Step 6: Final answer
    x = 244,271.50

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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.