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Finding the Fourth Proportional to 285,450.48, 393,904.62 and 158,116.86

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Solution

The fourth proportional to 285,450.48, 393,904.62 and 158,116.86 is: 218,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,450.48 : 393,904.62 = 158,116.86 : x
  2. Step 2: Convert to fraction form
    285,450.48/393,904.62 = 158,116.86/x
  3. Step 3: Cross multiply
    285,450.48x = 393,904.62 × 158,116.86
  4. Step 4: Simplify right side
    285,450.48x = 62,282,961,653.89
  5. Step 5: Solve for x
    x = 62,282,961,653.89/285,450.48
  6. Step 6: Final answer
    x = 218,191.83

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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.