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Finding the Fourth Proportional to 575,211.20, 862,808.70 and 259,667.60

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Solution

The fourth proportional to 575,211.20, 862,808.70 and 259,667.60 is: 389,497.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,211.20 : 862,808.70 = 259,667.60 : x
  2. Step 2: Convert to fraction form
    575,211.20/862,808.70 = 259,667.60/x
  3. Step 3: Cross multiply
    575,211.20x = 862,808.70 × 259,667.60
  4. Step 4: Simplify right side
    575,211.20x = 224,043,464,388.12
  5. Step 5: Solve for x
    x = 224,043,464,388.12/575,211.20
  6. Step 6: Final answer
    x = 389,497.74

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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.