Home / 309,385.36-464,285.40-198,655.12

Finding the Fourth Proportional to 309,385.36, 464,285.40 and 198,655.12

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Solution

The fourth proportional to 309,385.36, 464,285.40 and 198,655.12 is: 298,115.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,385.36 : 464,285.40 = 198,655.12 : x
  2. Step 2: Convert to fraction form
    309,385.36/464,285.40 = 198,655.12/x
  3. Step 3: Cross multiply
    309,385.36x = 464,285.40 × 198,655.12
  4. Step 4: Simplify right side
    309,385.36x = 92,232,671,851.25
  5. Step 5: Solve for x
    x = 92,232,671,851.25/309,385.36
  6. Step 6: Final answer
    x = 298,115.83

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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.