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Finding the Fourth Proportional to 315,650.80, 435,144.96 and 194,710.56

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Solution

The fourth proportional to 315,650.80, 435,144.96 and 194,710.56 is: 268,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,650.80 : 435,144.96 = 194,710.56 : x
  2. Step 2: Convert to fraction form
    315,650.80/435,144.96 = 194,710.56/x
  3. Step 3: Cross multiply
    315,650.80x = 435,144.96 × 194,710.56
  4. Step 4: Simplify right side
    315,650.80x = 84,727,318,842.78
  5. Step 5: Solve for x
    x = 84,727,318,842.78/315,650.80
  6. Step 6: Final answer
    x = 268,421.05

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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.