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Finding the Fourth Proportional to 260,054.60, 390,081.90 and 218,064.20

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Solution

The fourth proportional to 260,054.60, 390,081.90 and 218,064.20 is: 327,096.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,054.60 : 390,081.90 = 218,064.20 : x
  2. Step 2: Convert to fraction form
    260,054.60/390,081.90 = 218,064.20/x
  3. Step 3: Cross multiply
    260,054.60x = 390,081.90 × 218,064.20
  4. Step 4: Simplify right side
    260,054.60x = 85,062,897,457.98
  5. Step 5: Solve for x
    x = 85,062,897,457.98/260,054.60
  6. Step 6: Final answer
    x = 327,096.30

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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.