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Finding the Fourth Proportional to 667,430, 1,001,134.39 and 161,995.15

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Solution

The fourth proportional to 667,430, 1,001,134.39 and 161,995.15 is: 242,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,430 : 1,001,134.39 = 161,995.15 : x
  2. Step 2: Convert to fraction form
    667,430/1,001,134.39 = 161,995.15/x
  3. Step 3: Cross multiply
    667,430x = 1,001,134.39 × 161,995.15
  4. Step 4: Simplify right side
    667,430x = 162,178,915,678.21
  5. Step 5: Solve for x
    x = 162,178,915,678.21/667,430
  6. Step 6: Final answer
    x = 242,990.15

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1.5x scale

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.