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Finding the Fourth Proportional to 624,148.80, 936,223.20 and 309,220.80

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Solution

The fourth proportional to 624,148.80, 936,223.20 and 309,220.80 is: 463,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,148.80 : 936,223.20 = 309,220.80 : x
  2. Step 2: Convert to fraction form
    624,148.80/936,223.20 = 309,220.80/x
  3. Step 3: Cross multiply
    624,148.80x = 936,223.20 × 309,220.80
  4. Step 4: Simplify right side
    624,148.80x = 289,499,686,882.56
  5. Step 5: Solve for x
    x = 289,499,686,882.56/624,148.80
  6. Step 6: Final answer
    x = 463,831.20

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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.