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Finding the Fourth Proportional to 325,637.20, 488,225.40 and 125,880.40

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Solution

The fourth proportional to 325,637.20, 488,225.40 and 125,880.40 is: 188,731.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,637.20 : 488,225.40 = 125,880.40 : x
  2. Step 2: Convert to fraction form
    325,637.20/488,225.40 = 125,880.40/x
  3. Step 3: Cross multiply
    325,637.20x = 488,225.40 × 125,880.40
  4. Step 4: Simplify right side
    325,637.20x = 61,458,008,642.16
  5. Step 5: Solve for x
    x = 61,458,008,642.16/325,637.20
  6. Step 6: Final answer
    x = 188,731.54

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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.