Home / 428,785.00-643,014.10-144,399.25

Finding the Fourth Proportional to 428,785.00, 643,014.10 and 144,399.25

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Solution

The fourth proportional to 428,785.00, 643,014.10 and 144,399.25 is: 216,543.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,785.00 : 643,014.10 = 144,399.25 : x
  2. Step 2: Convert to fraction form
    428,785.00/643,014.10 = 144,399.25/x
  3. Step 3: Cross multiply
    428,785.00x = 643,014.10 × 144,399.25
  4. Step 4: Simplify right side
    428,785.00x = 92,850,751,810.89
  5. Step 5: Solve for x
    x = 92,850,751,810.89/428,785.00
  6. Step 6: Final answer
    x = 216,543.84

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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.