Home / 260,631.77-390,435.06-171,615.39

Finding the Fourth Proportional to 260,631.77, 390,435.06 and 171,615.39

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Solution

The fourth proportional to 260,631.77, 390,435.06 and 171,615.39 is: 257,085.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,631.77 : 390,435.06 = 171,615.39 : x
  2. Step 2: Convert to fraction form
    260,631.77/390,435.06 = 171,615.39/x
  3. Step 3: Cross multiply
    260,631.77x = 390,435.06 × 171,615.39
  4. Step 4: Simplify right side
    260,631.77x = 67,004,665,091.57
  5. Step 5: Solve for x
    x = 67,004,665,091.57/260,631.77
  6. Step 6: Final answer
    x = 257,085.57

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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.