Home / 261,350,389.84-391,040,579.40-155,915,819.68

Finding the Fourth Proportional to 261,350,389.84, 391,040,579.40 and 155,915,819.68

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Solution

The fourth proportional to 261,350,389.84, 391,040,579.40 and 155,915,819.68 is: 233,286,097.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,350,389.84 : 391,040,579.40 = 155,915,819.68 : x
  2. Step 2: Convert to fraction form
    261,350,389.84/391,040,579.40 = 155,915,819.68/x
  3. Step 3: Cross multiply
    261,350,389.84x = 391,040,579.40 × 155,915,819.68
  4. Step 4: Simplify right side
    261,350,389.84x = 60,969,412,465,293,120
  5. Step 5: Solve for x
    x = 60,969,412,465,293,120/261,350,389.84
  6. Step 6: Final answer
    x = 233,286,097.27

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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.