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Finding the Fourth Proportional to 303,670.30, 455,879.85 and 191,350.30

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Solution

The fourth proportional to 303,670.30, 455,879.85 and 191,350.30 is: 287,261.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,670.30 : 455,879.85 = 191,350.30 : x
  2. Step 2: Convert to fraction form
    303,670.30/455,879.85 = 191,350.30/x
  3. Step 3: Cross multiply
    303,670.30x = 455,879.85 × 191,350.30
  4. Step 4: Simplify right side
    303,670.30x = 87,232,746,061.46
  5. Step 5: Solve for x
    x = 87,232,746,061.46/303,670.30
  6. Step 6: Final answer
    x = 287,261.37

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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.