Home / 659,405.34-989,097.21-210,120.18

Finding the Fourth Proportional to 659,405.34, 989,097.21 and 210,120.18

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Solution

The fourth proportional to 659,405.34, 989,097.21 and 210,120.18 is: 315,176.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,405.34 : 989,097.21 = 210,120.18 : x
  2. Step 2: Convert to fraction form
    659,405.34/989,097.21 = 210,120.18/x
  3. Step 3: Cross multiply
    659,405.34x = 989,097.21 × 210,120.18
  4. Step 4: Simplify right side
    659,405.34x = 207,829,283,802.70
  5. Step 5: Solve for x
    x = 207,829,283,802.70/659,405.34
  6. Step 6: Final answer
    x = 315,176.83

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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.