Home / 326,664,939.88-489,971,697.18-142,428,068.20

Finding the Fourth Proportional to 326,664,939.88, 489,971,697.18 and 142,428,068.20

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Solution

The fourth proportional to 326,664,939.88, 489,971,697.18 and 142,428,068.20 is: 213,630,891.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,664,939.88 : 489,971,697.18 = 142,428,068.20 : x
  2. Step 2: Convert to fraction form
    326,664,939.88/489,971,697.18 = 142,428,068.20/x
  3. Step 3: Cross multiply
    326,664,939.88x = 489,971,697.18 × 142,428,068.20
  4. Step 4: Simplify right side
    326,664,939.88x = 69,785,722,302,022,784
  5. Step 5: Solve for x
    x = 69,785,722,302,022,784/326,664,939.88
  6. Step 6: Final answer
    x = 213,630,891.42

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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.