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Finding the Fourth Proportional to 217,068.80, 325,554.60 and 142,710.80

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Solution

The fourth proportional to 217,068.80, 325,554.60 and 142,710.80 is: 214,034.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,068.80 : 325,554.60 = 142,710.80 : x
  2. Step 2: Convert to fraction form
    217,068.80/325,554.60 = 142,710.80/x
  3. Step 3: Cross multiply
    217,068.80x = 325,554.60 × 142,710.80
  4. Step 4: Simplify right side
    217,068.80x = 46,460,157,409.68
  5. Step 5: Solve for x
    x = 46,460,157,409.68/217,068.80
  6. Step 6: Final answer
    x = 214,034.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.