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Finding the Fourth Proportional to 308,877.90, 463,316.85 and 131,390.70

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Solution

The fourth proportional to 308,877.90, 463,316.85 and 131,390.70 is: 197,086.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,877.90 : 463,316.85 = 131,390.70 : x
  2. Step 2: Convert to fraction form
    308,877.90/463,316.85 = 131,390.70/x
  3. Step 3: Cross multiply
    308,877.90x = 463,316.85 × 131,390.70
  4. Step 4: Simplify right side
    308,877.90x = 60,875,525,243.30
  5. Step 5: Solve for x
    x = 60,875,525,243.30/308,877.90
  6. Step 6: Final answer
    x = 197,086.05

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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.