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Finding the Fourth Proportional to 285,504.84, 393,980.22 and 158,172.84

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Solution

The fourth proportional to 285,504.84, 393,980.22 and 158,172.84 is: 218,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,504.84 : 393,980.22 = 158,172.84 : x
  2. Step 2: Convert to fraction form
    285,504.84/393,980.22 = 158,172.84/x
  3. Step 3: Cross multiply
    285,504.84x = 393,980.22 × 158,172.84
  4. Step 4: Simplify right side
    285,504.84x = 62,316,970,301.22
  5. Step 5: Solve for x
    x = 62,316,970,301.22/285,504.84
  6. Step 6: Final answer
    x = 218,269.40

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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.