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Finding the Fourth Proportional to 427,448.61, 641,238.53 and 146,900.25

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Solution

The fourth proportional to 427,448.61, 641,238.53 and 146,900.25 is: 220,372.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,448.61 : 641,238.53 = 146,900.25 : x
  2. Step 2: Convert to fraction form
    427,448.61/641,238.53 = 146,900.25/x
  3. Step 3: Cross multiply
    427,448.61x = 641,238.53 × 146,900.25
  4. Step 4: Simplify right side
    427,448.61x = 94,198,099,632.13
  5. Step 5: Solve for x
    x = 94,198,099,632.13/427,448.61
  6. Step 6: Final answer
    x = 220,372.92

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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.