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Finding the Fourth Proportional to 268,388.53, 370,376.94 and 153,668.94

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Solution

The fourth proportional to 268,388.53, 370,376.94 and 153,668.94 is: 212,063.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,388.53 : 370,376.94 = 153,668.94 : x
  2. Step 2: Convert to fraction form
    268,388.53/370,376.94 = 153,668.94/x
  3. Step 3: Cross multiply
    268,388.53x = 370,376.94 × 153,668.94
  4. Step 4: Simplify right side
    268,388.53x = 56,915,429,918.36
  5. Step 5: Solve for x
    x = 56,915,429,918.36/268,388.53
  6. Step 6: Final answer
    x = 212,063.57

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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.