Home / 257,784.57-386,584.58-89,259.64

Finding the Fourth Proportional to 257,784.57, 386,584.58 and 89,259.64

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Solution

The fourth proportional to 257,784.57, 386,584.58 and 89,259.64 is: 133,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,784.57 : 386,584.58 = 89,259.64 : x
  2. Step 2: Convert to fraction form
    257,784.57/386,584.58 = 89,259.64/x
  3. Step 3: Cross multiply
    257,784.57x = 386,584.58 × 89,259.64
  4. Step 4: Simplify right side
    257,784.57x = 34,506,399,194.95
  5. Step 5: Solve for x
    x = 34,506,399,194.95/257,784.57
  6. Step 6: Final answer
    x = 133,857.51

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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.