Home / 206,482.18-309,719.63-56,721.90

Finding the Fourth Proportional to 206,482.18, 309,719.63 and 56,721.90

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Solution

The fourth proportional to 206,482.18, 309,719.63 and 56,721.90 is: 85,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,482.18 : 309,719.63 = 56,721.90 : x
  2. Step 2: Convert to fraction form
    206,482.18/309,719.63 = 56,721.90/x
  3. Step 3: Cross multiply
    206,482.18x = 309,719.63 × 56,721.90
  4. Step 4: Simplify right side
    206,482.18x = 17,567,885,880.90
  5. Step 5: Solve for x
    x = 17,567,885,880.90/206,482.18
  6. Step 6: Final answer
    x = 85,081.85

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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.