Home / 391,298,651.20-587,325,890.40-238,243,643.20

Finding the Fourth Proportional to 391,298,651.20, 587,325,890.40 and 238,243,643.20

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Solution

The fourth proportional to 391,298,651.20, 587,325,890.40 and 238,243,643.20 is: 357,595,558.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,298,651.20 : 587,325,890.40 = 238,243,643.20 : x
  2. Step 2: Convert to fraction form
    391,298,651.20/587,325,890.40 = 238,243,643.20/x
  3. Step 3: Cross multiply
    391,298,651.20x = 587,325,890.40 × 238,243,643.20
  4. Step 4: Simplify right side
    391,298,651.20x = 139,926,659,874,579,888
  5. Step 5: Solve for x
    x = 139,926,659,874,579,888/391,298,651.20
  6. Step 6: Final answer
    x = 357,595,558.90

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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.