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Finding the Fourth Proportional to 307,705.62, 424,298.98 and 200,076.06

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Solution

The fourth proportional to 307,705.62, 424,298.98 and 200,076.06 is: 275,887.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,705.62 : 424,298.98 = 200,076.06 : x
  2. Step 2: Convert to fraction form
    307,705.62/424,298.98 = 200,076.06/x
  3. Step 3: Cross multiply
    307,705.62x = 424,298.98 × 200,076.06
  4. Step 4: Simplify right side
    307,705.62x = 84,892,068,180.42
  5. Step 5: Solve for x
    x = 84,892,068,180.42/307,705.62
  6. Step 6: Final answer
    x = 275,887.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.