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Finding the Fourth Proportional to 445,627.90, 669,035.13 and 258,773.50

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Solution

The fourth proportional to 445,627.90, 669,035.13 and 258,773.50 is: 388,504.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,627.90 : 669,035.13 = 258,773.50 : x
  2. Step 2: Convert to fraction form
    445,627.90/669,035.13 = 258,773.50/x
  3. Step 3: Cross multiply
    445,627.90x = 669,035.13 × 258,773.50
  4. Step 4: Simplify right side
    445,627.90x = 173,128,562,213.06
  5. Step 5: Solve for x
    x = 173,128,562,213.06/445,627.90
  6. Step 6: Final answer
    x = 388,504.76

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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.