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Finding the Fourth Proportional to 394,816.80, 592,266.69 and 128,598.06

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Solution

The fourth proportional to 394,816.80, 592,266.69 and 128,598.06 is: 192,910.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,816.80 : 592,266.69 = 128,598.06 : x
  2. Step 2: Convert to fraction form
    394,816.80/592,266.69 = 128,598.06/x
  3. Step 3: Cross multiply
    394,816.80x = 592,266.69 × 128,598.06
  4. Step 4: Simplify right side
    394,816.80x = 76,164,347,336.62
  5. Step 5: Solve for x
    x = 76,164,347,336.62/394,816.80
  6. Step 6: Final answer
    x = 192,910.60

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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.