Home / 312,905,320.80-469,525,942.80-131,170,869.60

Finding the Fourth Proportional to 312,905,320.80, 469,525,942.80 and 131,170,869.60

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Solution

The fourth proportional to 312,905,320.80, 469,525,942.80 and 131,170,869.60 is: 196,826,714.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,905,320.80 : 469,525,942.80 = 131,170,869.60 : x
  2. Step 2: Convert to fraction form
    312,905,320.80/469,525,942.80 = 131,170,869.60/x
  3. Step 3: Cross multiply
    312,905,320.80x = 469,525,942.80 × 131,170,869.60
  4. Step 4: Simplify right side
    312,905,320.80x = 61,588,126,216,835,856
  5. Step 5: Solve for x
    x = 61,588,126,216,835,856/312,905,320.80
  6. Step 6: Final answer
    x = 196,826,714.42

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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.