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Finding the Fourth Proportional to 285,505.34, 393,980.91 and 158,173.34

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Solution

The fourth proportional to 285,505.34, 393,980.91 and 158,173.34 is: 218,270.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,505.34 : 393,980.91 = 158,173.34 : x
  2. Step 2: Convert to fraction form
    285,505.34/393,980.91 = 158,173.34/x
  3. Step 3: Cross multiply
    285,505.34x = 393,980.91 × 158,173.34
  4. Step 4: Simplify right side
    285,505.34x = 62,317,276,430.94
  5. Step 5: Solve for x
    x = 62,317,276,430.94/285,505.34
  6. Step 6: Final answer
    x = 218,270.09

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1.5x scale

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.