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Finding the Fourth Proportional to 259,762.90, 389,449.95 and 141,567.70

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Solution

The fourth proportional to 259,762.90, 389,449.95 and 141,567.70 is: 212,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,762.90 : 389,449.95 = 141,567.70 : x
  2. Step 2: Convert to fraction form
    259,762.90/389,449.95 = 141,567.70/x
  3. Step 3: Cross multiply
    259,762.90x = 389,449.95 × 141,567.70
  4. Step 4: Simplify right side
    259,762.90x = 55,133,533,686.62
  5. Step 5: Solve for x
    x = 55,133,533,686.62/259,762.90
  6. Step 6: Final answer
    x = 212,245.60

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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.