Home / 212,817.54-318,285.08-189,290.28

Finding the Fourth Proportional to 212,817.54, 318,285.08 and 189,290.28

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Solution

The fourth proportional to 212,817.54, 318,285.08 and 189,290.28 is: 283,098.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,817.54 : 318,285.08 = 189,290.28 : x
  2. Step 2: Convert to fraction form
    212,817.54/318,285.08 = 189,290.28/x
  3. Step 3: Cross multiply
    212,817.54x = 318,285.08 × 189,290.28
  4. Step 4: Simplify right side
    212,817.54x = 60,248,271,913.02
  5. Step 5: Solve for x
    x = 60,248,271,913.02/212,817.54
  6. Step 6: Final answer
    x = 283,098.24

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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.