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Finding the Fourth Proportional to 449,489.38, 620,295.35 and 258,498.67

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Solution

The fourth proportional to 449,489.38, 620,295.35 and 258,498.67 is: 356,728.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,489.38 : 620,295.35 = 258,498.67 : x
  2. Step 2: Convert to fraction form
    449,489.38/620,295.35 = 258,498.67/x
  3. Step 3: Cross multiply
    449,489.38x = 620,295.35 × 258,498.67
  4. Step 4: Simplify right side
    449,489.38x = 160,345,522,982.19
  5. Step 5: Solve for x
    x = 160,345,522,982.19/449,489.38
  6. Step 6: Final answer
    x = 356,728.17

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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.