Home / 309,482.12-464,247.88-131,990.72

Finding the Fourth Proportional to 309,482.12, 464,247.88 and 131,990.72

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Solution

The fourth proportional to 309,482.12, 464,247.88 and 131,990.72 is: 197,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,482.12 : 464,247.88 = 131,990.72 : x
  2. Step 2: Convert to fraction form
    309,482.12/464,247.88 = 131,990.72/x
  3. Step 3: Cross multiply
    309,482.12x = 464,247.88 × 131,990.72
  4. Step 4: Simplify right side
    309,482.12x = 61,276,411,939.67
  5. Step 5: Solve for x
    x = 61,276,411,939.67/309,482.12
  6. Step 6: Final answer
    x = 197,996.61

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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.