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Finding the Fourth Proportional to 228,626.04, 315,515.25 and 137,980.56

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Solution

The fourth proportional to 228,626.04, 315,515.25 and 137,980.56 is: 190,420.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,626.04 : 315,515.25 = 137,980.56 : x
  2. Step 2: Convert to fraction form
    228,626.04/315,515.25 = 137,980.56/x
  3. Step 3: Cross multiply
    228,626.04x = 315,515.25 × 137,980.56
  4. Step 4: Simplify right side
    228,626.04x = 43,534,970,883.54
  5. Step 5: Solve for x
    x = 43,534,970,883.54/228,626.04
  6. Step 6: Final answer
    x = 190,420.00

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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.