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Finding the Fourth Proportional to 330,212.76, 455,693.88 and 186,973.03

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Solution

The fourth proportional to 330,212.76, 455,693.88 and 186,973.03 is: 258,022.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,212.76 : 455,693.88 = 186,973.03 : x
  2. Step 2: Convert to fraction form
    330,212.76/455,693.88 = 186,973.03/x
  3. Step 3: Cross multiply
    330,212.76x = 455,693.88 × 186,973.03
  4. Step 4: Simplify right side
    330,212.76x = 85,202,465,496.06
  5. Step 5: Solve for x
    x = 85,202,465,496.06/330,212.76
  6. Step 6: Final answer
    x = 258,022.93

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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.