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Finding the Fourth Proportional to 307,168.35, 423,857.28 and 178,079.90

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Solution

The fourth proportional to 307,168.35, 423,857.28 and 178,079.90 is: 245,729.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,168.35 : 423,857.28 = 178,079.90 : x
  2. Step 2: Convert to fraction form
    307,168.35/423,857.28 = 178,079.90/x
  3. Step 3: Cross multiply
    307,168.35x = 423,857.28 × 178,079.90
  4. Step 4: Simplify right side
    307,168.35x = 75,480,459,917.39
  5. Step 5: Solve for x
    x = 75,480,459,917.39/307,168.35
  6. Step 6: Final answer
    x = 245,729.94

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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.