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Finding the Fourth Proportional to 427,447.58, 642,334.54 and 227,908.94

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Solution

The fourth proportional to 427,447.58, 642,334.54 and 227,908.94 is: 342,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,447.58 : 642,334.54 = 227,908.94 : x
  2. Step 2: Convert to fraction form
    427,447.58/642,334.54 = 227,908.94/x
  3. Step 3: Cross multiply
    427,447.58x = 642,334.54 × 227,908.94
  4. Step 4: Simplify right side
    427,447.58x = 146,393,784,136.79
  5. Step 5: Solve for x
    x = 146,393,784,136.79/427,447.58
  6. Step 6: Final answer
    x = 342,483.60

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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.