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Finding the Fourth Proportional to 285,420.50, 393,880.32 and 158,104.34

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Solution

The fourth proportional to 285,420.50, 393,880.32 and 158,104.34 is: 218,184.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,420.50 : 393,880.32 = 158,104.34 : x
  2. Step 2: Convert to fraction form
    285,420.50/393,880.32 = 158,104.34/x
  3. Step 3: Cross multiply
    285,420.50x = 393,880.32 × 158,104.34
  4. Step 4: Simplify right side
    285,420.50x = 62,274,188,032.59
  5. Step 5: Solve for x
    x = 62,274,188,032.59/285,420.50
  6. Step 6: Final answer
    x = 218,184.01

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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.