Home / 259,627.40-389,376.30-99,668.60

Finding the Fourth Proportional to 259,627.40, 389,376.30 and 99,668.60

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Solution

The fourth proportional to 259,627.40, 389,376.30 and 99,668.60 is: 149,478.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,627.40 : 389,376.30 = 99,668.60 : x
  2. Step 2: Convert to fraction form
    259,627.40/389,376.30 = 99,668.60/x
  3. Step 3: Cross multiply
    259,627.40x = 389,376.30 × 99,668.60
  4. Step 4: Simplify right side
    259,627.40x = 38,808,590,694.18
  5. Step 5: Solve for x
    x = 38,808,590,694.18/259,627.40
  6. Step 6: Final answer
    x = 149,478.02

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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.