Home / 309,926.48-427,213.32-202,442.72

Finding the Fourth Proportional to 309,926.48, 427,213.32 and 202,442.72

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Solution

The fourth proportional to 309,926.48, 427,213.32 and 202,442.72 is: 279,054.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,926.48 : 427,213.32 = 202,442.72 : x
  2. Step 2: Convert to fraction form
    309,926.48/427,213.32 = 202,442.72/x
  3. Step 3: Cross multiply
    309,926.48x = 427,213.32 × 202,442.72
  4. Step 4: Simplify right side
    309,926.48x = 86,486,226,521.03
  5. Step 5: Solve for x
    x = 86,486,226,521.03/309,926.48
  6. Step 6: Final answer
    x = 279,054.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.