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Finding the Fourth Proportional to 251,394.36, 346,925.52 and 138,224.40

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Solution

The fourth proportional to 251,394.36, 346,925.52 and 138,224.40 is: 190,750.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,394.36 : 346,925.52 = 138,224.40 : x
  2. Step 2: Convert to fraction form
    251,394.36/346,925.52 = 138,224.40/x
  3. Step 3: Cross multiply
    251,394.36x = 346,925.52 × 138,224.40
  4. Step 4: Simplify right side
    251,394.36x = 47,953,571,846.69
  5. Step 5: Solve for x
    x = 47,953,571,846.69/251,394.36
  6. Step 6: Final answer
    x = 190,750.39

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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.