Home / 428,911.00-642,917.55-144,503.27

Finding the Fourth Proportional to 428,911.00, 642,917.55 and 144,503.27

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Solution

The fourth proportional to 428,911.00, 642,917.55 and 144,503.27 is: 216,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,911.00 : 642,917.55 = 144,503.27 : x
  2. Step 2: Convert to fraction form
    428,911.00/642,917.55 = 144,503.27/x
  3. Step 3: Cross multiply
    428,911.00x = 642,917.55 × 144,503.27
  4. Step 4: Simplify right side
    428,911.00x = 92,903,686,245.42
  5. Step 5: Solve for x
    x = 92,903,686,245.42/428,911.00
  6. Step 6: Final answer
    x = 216,603.65

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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.