Home / 268,942.18-403,457.06-79,421.72

Finding the Fourth Proportional to 268,942.18, 403,457.06 and 79,421.72

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Solution

The fourth proportional to 268,942.18, 403,457.06 and 79,421.72 is: 119,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,942.18 : 403,457.06 = 79,421.72 : x
  2. Step 2: Convert to fraction form
    268,942.18/403,457.06 = 79,421.72/x
  3. Step 3: Cross multiply
    268,942.18x = 403,457.06 × 79,421.72
  4. Step 4: Simplify right side
    268,942.18x = 32,043,253,225.89
  5. Step 5: Solve for x
    x = 32,043,253,225.89/268,942.18
  6. Step 6: Final answer
    x = 119,145.51

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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.