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Finding the Fourth Proportional to 358,275.99, 494,432.78 and 197,142.87

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Solution

The fourth proportional to 358,275.99, 494,432.78 and 197,142.87 is: 272,063.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,275.99 : 494,432.78 = 197,142.87 : x
  2. Step 2: Convert to fraction form
    358,275.99/494,432.78 = 197,142.87/x
  3. Step 3: Cross multiply
    358,275.99x = 494,432.78 × 197,142.87
  4. Step 4: Simplify right side
    358,275.99x = 97,473,896,285.56
  5. Step 5: Solve for x
    x = 97,473,896,285.56/358,275.99
  6. Step 6: Final answer
    x = 272,063.71

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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.