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Finding the Fourth Proportional to 308,911.40, 462,783.90 and 158,640.20

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Solution

The fourth proportional to 308,911.40, 462,783.90 and 158,640.20 is: 237,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,911.40 : 462,783.90 = 158,640.20 : x
  2. Step 2: Convert to fraction form
    308,911.40/462,783.90 = 158,640.20/x
  3. Step 3: Cross multiply
    308,911.40x = 462,783.90 × 158,640.20
  4. Step 4: Simplify right side
    308,911.40x = 73,416,130,452.78
  5. Step 5: Solve for x
    x = 73,416,130,452.78/308,911.40
  6. Step 6: Final answer
    x = 237,660.80

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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.