Home / 285,290.28-393,705.42-156,226.68

Finding the Fourth Proportional to 285,290.28, 393,705.42 and 156,226.68

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Solution

The fourth proportional to 285,290.28, 393,705.42 and 156,226.68 is: 215,595.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,290.28 : 393,705.42 = 156,226.68 : x
  2. Step 2: Convert to fraction form
    285,290.28/393,705.42 = 156,226.68/x
  3. Step 3: Cross multiply
    285,290.28x = 393,705.42 × 156,226.68
  4. Step 4: Simplify right side
    285,290.28x = 61,507,290,664.61
  5. Step 5: Solve for x
    x = 61,507,290,664.61/285,290.28
  6. Step 6: Final answer
    x = 215,595.47

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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.