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Finding the Fourth Proportional to 218,066.90, 326,886.80 and 122,051.01

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Solution

The fourth proportional to 218,066.90, 326,886.80 and 122,051.01 is: 182,956.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,066.90 : 326,886.80 = 122,051.01 : x
  2. Step 2: Convert to fraction form
    218,066.90/326,886.80 = 122,051.01/x
  3. Step 3: Cross multiply
    218,066.90x = 326,886.80 × 122,051.01
  4. Step 4: Simplify right side
    218,066.90x = 39,896,863,485.41
  5. Step 5: Solve for x
    x = 39,896,863,485.41/218,066.90
  6. Step 6: Final answer
    x = 182,956.99

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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.