Home / 204,428,390.40-306,642,585.60-131,868,979.20

Finding the Fourth Proportional to 204,428,390.40, 306,642,585.60 and 131,868,979.20

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Solution

The fourth proportional to 204,428,390.40, 306,642,585.60 and 131,868,979.20 is: 197,803,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,428,390.40 : 306,642,585.60 = 131,868,979.20 : x
  2. Step 2: Convert to fraction form
    204,428,390.40/306,642,585.60 = 131,868,979.20/x
  3. Step 3: Cross multiply
    204,428,390.40x = 306,642,585.60 × 131,868,979.20
  4. Step 4: Simplify right side
    204,428,390.40x = 40,436,644,742,320,624
  5. Step 5: Solve for x
    x = 40,436,644,742,320,624/204,428,390.40
  6. Step 6: Final answer
    x = 197,803,468.80

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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.