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Finding the Fourth Proportional to 358,421.70, 494,631.90 and 195,079.68

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Solution

The fourth proportional to 358,421.70, 494,631.90 and 195,079.68 is: 269,215.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,421.70 : 494,631.90 = 195,079.68 : x
  2. Step 2: Convert to fraction form
    358,421.70/494,631.90 = 195,079.68/x
  3. Step 3: Cross multiply
    358,421.70x = 494,631.90 × 195,079.68
  4. Step 4: Simplify right side
    358,421.70x = 96,492,632,769.79
  5. Step 5: Solve for x
    x = 96,492,632,769.79/358,421.70
  6. Step 6: Final answer
    x = 269,215.38

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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.