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Finding the Fourth Proportional to 450,388.80, 621,450.23 and 256,792.86

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Solution

The fourth proportional to 450,388.80, 621,450.23 and 256,792.86 is: 354,324.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,388.80 : 621,450.23 = 256,792.86 : x
  2. Step 2: Convert to fraction form
    450,388.80/621,450.23 = 256,792.86/x
  3. Step 3: Cross multiply
    450,388.80x = 621,450.23 × 256,792.86
  4. Step 4: Simplify right side
    450,388.80x = 159,583,980,625.39
  5. Step 5: Solve for x
    x = 159,583,980,625.39/450,388.80
  6. Step 6: Final answer
    x = 354,324.93

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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.