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Finding the Fourth Proportional to 304,790.57, 420,816.50 and 190,243.70

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Solution

The fourth proportional to 304,790.57, 420,816.50 and 190,243.70 is: 262,664.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,790.57 : 420,816.50 = 190,243.70 : x
  2. Step 2: Convert to fraction form
    304,790.57/420,816.50 = 190,243.70/x
  3. Step 3: Cross multiply
    304,790.57x = 420,816.50 × 190,243.70
  4. Step 4: Simplify right side
    304,790.57x = 80,057,684,925.75
  5. Step 5: Solve for x
    x = 80,057,684,925.75/304,790.57
  6. Step 6: Final answer
    x = 262,664.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.