Home / 428,475.48-642,769.08-158,566.86

Finding the Fourth Proportional to 428,475.48, 642,769.08 and 158,566.86

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Solution

The fourth proportional to 428,475.48, 642,769.08 and 158,566.86 is: 237,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,475.48 : 642,769.08 = 158,566.86 : x
  2. Step 2: Convert to fraction form
    428,475.48/642,769.08 = 158,566.86/x
  3. Step 3: Cross multiply
    428,475.48x = 642,769.08 × 158,566.86
  4. Step 4: Simplify right side
    428,475.48x = 101,921,874,720.69
  5. Step 5: Solve for x
    x = 101,921,874,720.69/428,475.48
  6. Step 6: Final answer
    x = 237,870.96

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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.