Home / 285,079,170.94-393,409,255.89-154,698,978.94

Finding the Fourth Proportional to 285,079,170.94, 393,409,255.89 and 154,698,978.94

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Solution

The fourth proportional to 285,079,170.94, 393,409,255.89 and 154,698,978.94 is: 213,484,590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,079,170.94 : 393,409,255.89 = 154,698,978.94 : x
  2. Step 2: Convert to fraction form
    285,079,170.94/393,409,255.89 = 154,698,978.94/x
  3. Step 3: Cross multiply
    285,079,170.94x = 393,409,255.89 × 154,698,978.94
  4. Step 4: Simplify right side
    285,079,170.94x = 60,860,010,191,324,784
  5. Step 5: Solve for x
    x = 60,860,010,191,324,784/285,079,170.94
  6. Step 6: Final answer
    x = 213,484,590.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.