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Finding the Fourth Proportional to 231,490.70, 346,976.85 and 131,698.70

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Solution

The fourth proportional to 231,490.70, 346,976.85 and 131,698.70 is: 197,400.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,490.70 : 346,976.85 = 131,698.70 : x
  2. Step 2: Convert to fraction form
    231,490.70/346,976.85 = 131,698.70/x
  3. Step 3: Cross multiply
    231,490.70x = 346,976.85 × 131,698.70
  4. Step 4: Simplify right side
    231,490.70x = 45,696,400,075.10
  5. Step 5: Solve for x
    x = 45,696,400,075.10/231,490.70
  6. Step 6: Final answer
    x = 197,400.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.