Home / 659,406.51-989,099.04-210,121.32

Finding the Fourth Proportional to 659,406.51, 989,099.04 and 210,121.32

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Solution

The fourth proportional to 659,406.51, 989,099.04 and 210,121.32 is: 315,178.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,406.51 : 989,099.04 = 210,121.32 : x
  2. Step 2: Convert to fraction form
    659,406.51/989,099.04 = 210,121.32/x
  3. Step 3: Cross multiply
    659,406.51x = 989,099.04 × 210,121.32
  4. Step 4: Simplify right side
    659,406.51x = 207,830,795,895.53
  5. Step 5: Solve for x
    x = 207,830,795,895.53/659,406.51
  6. Step 6: Final answer
    x = 315,178.56

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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.