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Finding the Fourth Proportional to 285,880.99, 394,518.84 and 158,564.78

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Solution

The fourth proportional to 285,880.99, 394,518.84 and 158,564.78 is: 218,821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,880.99 : 394,518.84 = 158,564.78 : x
  2. Step 2: Convert to fraction form
    285,880.99/394,518.84 = 158,564.78/x
  3. Step 3: Cross multiply
    285,880.99x = 394,518.84 × 158,564.78
  4. Step 4: Simplify right side
    285,880.99x = 62,556,793,070.46
  5. Step 5: Solve for x
    x = 62,556,793,070.46/285,880.99
  6. Step 6: Final answer
    x = 218,821.10

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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.