Home / 399,212.90-598,902.55-133,056.10

Finding the Fourth Proportional to 399,212.90, 598,902.55 and 133,056.10

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Solution

The fourth proportional to 399,212.90, 598,902.55 and 133,056.10 is: 199,611.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,212.90 : 598,902.55 = 133,056.10 : x
  2. Step 2: Convert to fraction form
    399,212.90/598,902.55 = 133,056.10/x
  3. Step 3: Cross multiply
    399,212.90x = 598,902.55 × 133,056.10
  4. Step 4: Simplify right side
    399,212.90x = 79,687,637,583.06
  5. Step 5: Solve for x
    x = 79,687,637,583.06/399,212.90
  6. Step 6: Final answer
    x = 199,611.88

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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.