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Finding the Fourth Proportional to 229,707.36, 317,003.01 and 139,079.90

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Solution

The fourth proportional to 229,707.36, 317,003.01 and 139,079.90 is: 191,934.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,707.36 : 317,003.01 = 139,079.90 : x
  2. Step 2: Convert to fraction form
    229,707.36/317,003.01 = 139,079.90/x
  3. Step 3: Cross multiply
    229,707.36x = 317,003.01 × 139,079.90
  4. Step 4: Simplify right side
    229,707.36x = 44,088,746,930.50
  5. Step 5: Solve for x
    x = 44,088,746,930.50/229,707.36
  6. Step 6: Final answer
    x = 191,934.41

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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.