Home / 428,569.40-642,944.01-162,324.02

Finding the Fourth Proportional to 428,569.40, 642,944.01 and 162,324.02

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Solution

The fourth proportional to 428,569.40, 642,944.01 and 162,324.02 is: 243,520.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,569.40 : 642,944.01 = 162,324.02 : x
  2. Step 2: Convert to fraction form
    428,569.40/642,944.01 = 162,324.02/x
  3. Step 3: Cross multiply
    428,569.40x = 642,944.01 × 162,324.02
  4. Step 4: Simplify right side
    428,569.40x = 104,365,256,338.12
  5. Step 5: Solve for x
    x = 104,365,256,338.12/428,569.40
  6. Step 6: Final answer
    x = 243,520.08

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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.