Home / 259,748.85-389,681.73-91,280.80

Finding the Fourth Proportional to 259,748.85, 389,681.73 and 91,280.80

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Solution

The fourth proportional to 259,748.85, 389,681.73 and 91,280.80 is: 136,941.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,748.85 : 389,681.73 = 91,280.80 : x
  2. Step 2: Convert to fraction form
    259,748.85/389,681.73 = 91,280.80/x
  3. Step 3: Cross multiply
    259,748.85x = 389,681.73 × 91,280.80
  4. Step 4: Simplify right side
    259,748.85x = 35,570,460,059.78
  5. Step 5: Solve for x
    x = 35,570,460,059.78/259,748.85
  6. Step 6: Final answer
    x = 136,941.74

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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.