Home / 212,848.02-319,056.42-138,015.62

Finding the Fourth Proportional to 212,848.02, 319,056.42 and 138,015.62

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Solution

The fourth proportional to 212,848.02, 319,056.42 and 138,015.62 is: 206,883.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,848.02 : 319,056.42 = 138,015.62 : x
  2. Step 2: Convert to fraction form
    212,848.02/319,056.42 = 138,015.62/x
  3. Step 3: Cross multiply
    212,848.02x = 319,056.42 × 138,015.62
  4. Step 4: Simplify right side
    212,848.02x = 44,034,769,621.28
  5. Step 5: Solve for x
    x = 44,034,769,621.28/212,848.02
  6. Step 6: Final answer
    x = 206,883.62

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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.