Home / 212,878.02-318,679.44-205,307.64

Finding the Fourth Proportional to 212,878.02, 318,679.44 and 205,307.64

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Solution

The fourth proportional to 212,878.02, 318,679.44 and 205,307.64 is: 307,346.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,878.02 : 318,679.44 = 205,307.64 : x
  2. Step 2: Convert to fraction form
    212,878.02/318,679.44 = 205,307.64/x
  3. Step 3: Cross multiply
    212,878.02x = 318,679.44 × 205,307.64
  4. Step 4: Simplify right side
    212,878.02x = 65,427,323,742.92
  5. Step 5: Solve for x
    x = 65,427,323,742.92/212,878.02
  6. Step 6: Final answer
    x = 307,346.54

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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.