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Finding the Fourth Proportional to 285,892.79, 394,579.28 and 158,609.39

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Solution

The fourth proportional to 285,892.79, 394,579.28 and 158,609.39 is: 218,907.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,892.79 : 394,579.28 = 158,609.39 : x
  2. Step 2: Convert to fraction form
    285,892.79/394,579.28 = 158,609.39/x
  3. Step 3: Cross multiply
    285,892.79x = 394,579.28 × 158,609.39
  4. Step 4: Simplify right side
    285,892.79x = 62,583,977,331.07
  5. Step 5: Solve for x
    x = 62,583,977,331.07/285,892.79
  6. Step 6: Final answer
    x = 218,907.16

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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.