Home / 428,909.58-642,915.44-144,501.85

Finding the Fourth Proportional to 428,909.58, 642,915.44 and 144,501.85

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Solution

The fourth proportional to 428,909.58, 642,915.44 and 144,501.85 is: 216,601.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,909.58 : 642,915.44 = 144,501.85 : x
  2. Step 2: Convert to fraction form
    428,909.58/642,915.44 = 144,501.85/x
  3. Step 3: Cross multiply
    428,909.58x = 642,915.44 × 144,501.85
  4. Step 4: Simplify right side
    428,909.58x = 92,902,471,096.58
  5. Step 5: Solve for x
    x = 92,902,471,096.58/428,909.58
  6. Step 6: Final answer
    x = 216,601.53

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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.