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Finding the Fourth Proportional to 325,455.60, 488,261.34 and 135,810.46

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Solution

The fourth proportional to 325,455.60, 488,261.34 and 135,810.46 is: 203,748.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,455.60 : 488,261.34 = 135,810.46 : x
  2. Step 2: Convert to fraction form
    325,455.60/488,261.34 = 135,810.46/x
  3. Step 3: Cross multiply
    325,455.60x = 488,261.34 × 135,810.46
  4. Step 4: Simplify right side
    325,455.60x = 66,310,997,491.29
  5. Step 5: Solve for x
    x = 66,310,997,491.29/325,455.60
  6. Step 6: Final answer
    x = 203,748.22

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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.