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Finding the Fourth Proportional to 250,057.36, 345,079.74 and 136,887.40

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Solution

The fourth proportional to 250,057.36, 345,079.74 and 136,887.40 is: 188,904.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,057.36 : 345,079.74 = 136,887.40 : x
  2. Step 2: Convert to fraction form
    250,057.36/345,079.74 = 136,887.40/x
  3. Step 3: Cross multiply
    250,057.36x = 345,079.74 × 136,887.40
  4. Step 4: Simplify right side
    250,057.36x = 47,237,068,401.28
  5. Step 5: Solve for x
    x = 47,237,068,401.28/250,057.36
  6. Step 6: Final answer
    x = 188,904.93

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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.