Home / 251,401.83-346,921.70-138,202.71

Finding the Fourth Proportional to 251,401.83, 346,921.70 and 138,202.71

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Solution

The fourth proportional to 251,401.83, 346,921.70 and 138,202.71 is: 190,712.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,401.83 : 346,921.70 = 138,202.71 : x
  2. Step 2: Convert to fraction form
    251,401.83/346,921.70 = 138,202.71/x
  3. Step 3: Cross multiply
    251,401.83x = 346,921.70 × 138,202.71
  4. Step 4: Simplify right side
    251,401.83x = 47,945,518,406.79
  5. Step 5: Solve for x
    x = 47,945,518,406.79/251,401.83
  6. Step 6: Final answer
    x = 190,712.69

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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.