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Finding the Fourth Proportional to 251,018.75, 346,408.31 and 137,843.93

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Solution

The fourth proportional to 251,018.75, 346,408.31 and 137,843.93 is: 190,225.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,018.75 : 346,408.31 = 137,843.93 : x
  2. Step 2: Convert to fraction form
    251,018.75/346,408.31 = 137,843.93/x
  3. Step 3: Cross multiply
    251,018.75x = 346,408.31 × 137,843.93
  4. Step 4: Simplify right side
    251,018.75x = 47,750,282,835.06
  5. Step 5: Solve for x
    x = 47,750,282,835.06/251,018.75
  6. Step 6: Final answer
    x = 190,225.96

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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.