Home / 659,394.39-989,080.72-210,109.18

Finding the Fourth Proportional to 659,394.39, 989,080.72 and 210,109.18

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Solution

The fourth proportional to 659,394.39, 989,080.72 and 210,109.18 is: 315,160.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,394.39 : 989,080.72 = 210,109.18 : x
  2. Step 2: Convert to fraction form
    659,394.39/989,080.72 = 210,109.18/x
  3. Step 3: Cross multiply
    659,394.39x = 989,080.72 × 210,109.18
  4. Step 4: Simplify right side
    659,394.39x = 207,814,939,033.01
  5. Step 5: Solve for x
    x = 207,814,939,033.01/659,394.39
  6. Step 6: Final answer
    x = 315,160.31

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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.