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Finding the Fourth Proportional to 445,626.90, 669,033.63 and 258,772.50

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Solution

The fourth proportional to 445,626.90, 669,033.63 and 258,772.50 is: 388,503.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,626.90 : 669,033.63 = 258,772.50 : x
  2. Step 2: Convert to fraction form
    445,626.90/669,033.63 = 258,772.50/x
  3. Step 3: Cross multiply
    445,626.90x = 669,033.63 × 258,772.50
  4. Step 4: Simplify right side
    445,626.90x = 173,127,505,019.18
  5. Step 5: Solve for x
    x = 173,127,505,019.18/445,626.90
  6. Step 6: Final answer
    x = 388,503.26

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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.