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Finding the Fourth Proportional to 229,804.62, 317,139.40 and 139,109.28

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Solution

The fourth proportional to 229,804.62, 317,139.40 and 139,109.28 is: 191,976.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,804.62 : 317,139.40 = 139,109.28 : x
  2. Step 2: Convert to fraction form
    229,804.62/317,139.40 = 139,109.28/x
  3. Step 3: Cross multiply
    229,804.62x = 317,139.40 × 139,109.28
  4. Step 4: Simplify right side
    229,804.62x = 44,117,033,593.63
  5. Step 5: Solve for x
    x = 44,117,033,593.63/229,804.62
  6. Step 6: Final answer
    x = 191,976.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.