Home / 428,852.38-643,032.46-162,442.98

Finding the Fourth Proportional to 428,852.38, 643,032.46 and 162,442.98

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Solution

The fourth proportional to 428,852.38, 643,032.46 and 162,442.98 is: 243,571.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,852.38 : 643,032.46 = 162,442.98 : x
  2. Step 2: Convert to fraction form
    428,852.38/643,032.46 = 162,442.98/x
  3. Step 3: Cross multiply
    428,852.38x = 643,032.46 × 162,442.98
  4. Step 4: Simplify right side
    428,852.38x = 104,456,109,039.13
  5. Step 5: Solve for x
    x = 104,456,109,039.13/428,852.38
  6. Step 6: Final answer
    x = 243,571.25

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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.