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Finding the Fourth Proportional to 283,271.60, 425,169.84 and 143,128.64

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Solution

The fourth proportional to 283,271.60, 425,169.84 and 143,128.64 is: 214,825.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,271.60 : 425,169.84 = 143,128.64 : x
  2. Step 2: Convert to fraction form
    283,271.60/425,169.84 = 143,128.64/x
  3. Step 3: Cross multiply
    283,271.60x = 425,169.84 × 143,128.64
  4. Step 4: Simplify right side
    283,271.60x = 60,853,980,968.22
  5. Step 5: Solve for x
    x = 60,853,980,968.22/283,271.60
  6. Step 6: Final answer
    x = 214,825.56

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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.