Home / 212,130.53-318,779-198,260.09

Finding the Fourth Proportional to 212,130.53, 318,779 and 198,260.09

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Solution

The fourth proportional to 212,130.53, 318,779 and 198,260.09 is: 297,935.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,130.53 : 318,779 = 198,260.09 : x
  2. Step 2: Convert to fraction form
    212,130.53/318,779 = 198,260.09/x
  3. Step 3: Cross multiply
    212,130.53x = 318,779 × 198,260.09
  4. Step 4: Simplify right side
    212,130.53x = 63,201,153,230.11
  5. Step 5: Solve for x
    x = 63,201,153,230.11/212,130.53
  6. Step 6: Final answer
    x = 297,935.21

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1.5x scale

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.