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Finding the Fourth Proportional to 251,393.36, 346,924.14 and 138,223.40

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Solution

The fourth proportional to 251,393.36, 346,924.14 and 138,223.40 is: 190,749.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,393.36 : 346,924.14 = 138,223.40 : x
  2. Step 2: Convert to fraction form
    251,393.36/346,924.14 = 138,223.40/x
  3. Step 3: Cross multiply
    251,393.36x = 346,924.14 × 138,223.40
  4. Step 4: Simplify right side
    251,393.36x = 47,953,034,172.88
  5. Step 5: Solve for x
    x = 47,953,034,172.88/251,393.36
  6. Step 6: Final answer
    x = 190,749.01

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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.