Home / 305,004,672.90-420,910,709.85-165,775,392.90

Finding the Fourth Proportional to 305,004,672.90, 420,910,709.85 and 165,775,392.90

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Solution

The fourth proportional to 305,004,672.90, 420,910,709.85 and 165,775,392.90 is: 228,772,358.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,004,672.90 : 420,910,709.85 = 165,775,392.90 : x
  2. Step 2: Convert to fraction form
    305,004,672.90/420,910,709.85 = 165,775,392.90/x
  3. Step 3: Cross multiply
    305,004,672.90x = 420,910,709.85 × 165,775,392.90
  4. Step 4: Simplify right side
    305,004,672.90x = 69,776,638,301,201,656
  5. Step 5: Solve for x
    x = 69,776,638,301,201,656/305,004,672.90
  6. Step 6: Final answer
    x = 228,772,358.27

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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.