Home / 389,485.03-584,257.09-105,171.44

Finding the Fourth Proportional to 389,485.03, 584,257.09 and 105,171.44

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Solution

The fourth proportional to 389,485.03, 584,257.09 and 105,171.44 is: 157,765.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,485.03 : 584,257.09 = 105,171.44 : x
  2. Step 2: Convert to fraction form
    389,485.03/584,257.09 = 105,171.44/x
  3. Step 3: Cross multiply
    389,485.03x = 584,257.09 × 105,171.44
  4. Step 4: Simplify right side
    389,485.03x = 61,447,159,485.51
  5. Step 5: Solve for x
    x = 61,447,159,485.51/389,485.03
  6. Step 6: Final answer
    x = 157,765.14

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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.