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Finding the Fourth Proportional to 216,869.51, 325,317.03 and 83,750.47

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Solution

The fourth proportional to 216,869.51, 325,317.03 and 83,750.47 is: 125,630.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,869.51 : 325,317.03 = 83,750.47 : x
  2. Step 2: Convert to fraction form
    216,869.51/325,317.03 = 83,750.47/x
  3. Step 3: Cross multiply
    216,869.51x = 325,317.03 × 83,750.47
  4. Step 4: Simplify right side
    216,869.51x = 27,245,453,348.21
  5. Step 5: Solve for x
    x = 27,245,453,348.21/216,869.51
  6. Step 6: Final answer
    x = 125,630.63

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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.