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Finding the Fourth Proportional to 608,112.80, 912,169.20 and 356,170.40

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Solution

The fourth proportional to 608,112.80, 912,169.20 and 356,170.40 is: 534,255.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,112.80 : 912,169.20 = 356,170.40 : x
  2. Step 2: Convert to fraction form
    608,112.80/912,169.20 = 356,170.40/x
  3. Step 3: Cross multiply
    608,112.80x = 912,169.20 × 356,170.40
  4. Step 4: Simplify right side
    608,112.80x = 324,887,668,831.68
  5. Step 5: Solve for x
    x = 324,887,668,831.68/608,112.80
  6. Step 6: Final answer
    x = 534,255.60

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Double scale
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Similar ratio
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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.