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Finding the Fourth Proportional to 308,879.60, 463,319.40 and 238,809.20

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Solution

The fourth proportional to 308,879.60, 463,319.40 and 238,809.20 is: 358,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,879.60 : 463,319.40 = 238,809.20 : x
  2. Step 2: Convert to fraction form
    308,879.60/463,319.40 = 238,809.20/x
  3. Step 3: Cross multiply
    308,879.60x = 463,319.40 × 238,809.20
  4. Step 4: Simplify right side
    308,879.60x = 110,644,935,258.48
  5. Step 5: Solve for x
    x = 110,644,935,258.48/308,879.60
  6. Step 6: Final answer
    x = 358,213.80

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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.