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Finding the Fourth Proportional to 259,709.60, 389,564.40 and 93,437.60

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Solution

The fourth proportional to 259,709.60, 389,564.40 and 93,437.60 is: 140,156.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,709.60 : 389,564.40 = 93,437.60 : x
  2. Step 2: Convert to fraction form
    259,709.60/389,564.40 = 93,437.60/x
  3. Step 3: Cross multiply
    259,709.60x = 389,564.40 × 93,437.60
  4. Step 4: Simplify right side
    259,709.60x = 36,399,962,581.44
  5. Step 5: Solve for x
    x = 36,399,962,581.44/259,709.60
  6. Step 6: Final answer
    x = 140,156.40

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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.