Home / 228,958,166.16-315,933,563.16-154,780,128.72

Finding the Fourth Proportional to 228,958,166.16, 315,933,563.16 and 154,780,128.72

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Solution

The fourth proportional to 228,958,166.16, 315,933,563.16 and 154,780,128.72 is: 213,577,171.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,958,166.16 : 315,933,563.16 = 154,780,128.72 : x
  2. Step 2: Convert to fraction form
    228,958,166.16/315,933,563.16 = 154,780,128.72/x
  3. Step 3: Cross multiply
    228,958,166.16x = 315,933,563.16 × 154,780,128.72
  4. Step 4: Simplify right side
    228,958,166.16x = 48,900,237,572,873,056
  5. Step 5: Solve for x
    x = 48,900,237,572,873,056/228,958,166.16
  6. Step 6: Final answer
    x = 213,577,171.73

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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.