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Finding the Fourth Proportional to 303,624.90, 455,728.95 and 259,301.70

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Solution

The fourth proportional to 303,624.90, 455,728.95 and 259,301.70 is: 389,201.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,624.90 : 455,728.95 = 259,301.70 : x
  2. Step 2: Convert to fraction form
    303,624.90/455,728.95 = 259,301.70/x
  3. Step 3: Cross multiply
    303,624.90x = 455,728.95 × 259,301.70
  4. Step 4: Simplify right side
    303,624.90x = 118,171,291,474.22
  5. Step 5: Solve for x
    x = 118,171,291,474.22/303,624.90
  6. Step 6: Final answer
    x = 389,201.58

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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.