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Finding the Fourth Proportional to 427,499.28, 641,336.40 and 146,980.08

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Solution

The fourth proportional to 427,499.28, 641,336.40 and 146,980.08 is: 220,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,499.28 : 641,336.40 = 146,980.08 : x
  2. Step 2: Convert to fraction form
    427,499.28/641,336.40 = 146,980.08/x
  3. Step 3: Cross multiply
    427,499.28x = 641,336.40 × 146,980.08
  4. Step 4: Simplify right side
    427,499.28x = 94,263,675,378.91
  5. Step 5: Solve for x
    x = 94,263,675,378.91/427,499.28
  6. Step 6: Final answer
    x = 220,500.20

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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.