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Finding the Fourth Proportional to 308,927.20, 463,390.80 and 131,389.60

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Solution

The fourth proportional to 308,927.20, 463,390.80 and 131,389.60 is: 197,084.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,927.20 : 463,390.80 = 131,389.60 : x
  2. Step 2: Convert to fraction form
    308,927.20/463,390.80 = 131,389.60/x
  3. Step 3: Cross multiply
    308,927.20x = 463,390.80 × 131,389.60
  4. Step 4: Simplify right side
    308,927.20x = 60,884,731,855.68
  5. Step 5: Solve for x
    x = 60,884,731,855.68/308,927.20
  6. Step 6: Final answer
    x = 197,084.40

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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.