Home / 411,830.15-618,144.68-198,748.02

Finding the Fourth Proportional to 411,830.15, 618,144.68 and 198,748.02

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Solution

The fourth proportional to 411,830.15, 618,144.68 and 198,748.02 is: 298,314.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,830.15 : 618,144.68 = 198,748.02 : x
  2. Step 2: Convert to fraction form
    411,830.15/618,144.68 = 198,748.02/x
  3. Step 3: Cross multiply
    411,830.15x = 618,144.68 × 198,748.02
  4. Step 4: Simplify right side
    411,830.15x = 122,855,034,038.45
  5. Step 5: Solve for x
    x = 122,855,034,038.45/411,830.15
  6. Step 6: Final answer
    x = 298,314.82

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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.