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Finding the Fourth Proportional to 216,739.80, 325,166.40 and 83,624.40

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Solution

The fourth proportional to 216,739.80, 325,166.40 and 83,624.40 is: 125,458.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,739.80 : 325,166.40 = 83,624.40 : x
  2. Step 2: Convert to fraction form
    216,739.80/325,166.40 = 83,624.40/x
  3. Step 3: Cross multiply
    216,739.80x = 325,166.40 × 83,624.40
  4. Step 4: Simplify right side
    216,739.80x = 27,191,845,100.16
  5. Step 5: Solve for x
    x = 27,191,845,100.16/216,739.80
  6. Step 6: Final answer
    x = 125,458.48

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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.