Home / 312,013,879.80-468,020,819.70-221,314,615.80

Finding the Fourth Proportional to 312,013,879.80, 468,020,819.70 and 221,314,615.80

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Solution

The fourth proportional to 312,013,879.80, 468,020,819.70 and 221,314,615.80 is: 331,971,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,013,879.80 : 468,020,819.70 = 221,314,615.80 : x
  2. Step 2: Convert to fraction form
    312,013,879.80/468,020,819.70 = 221,314,615.80/x
  3. Step 3: Cross multiply
    312,013,879.80x = 468,020,819.70 × 221,314,615.80
  4. Step 4: Simplify right side
    312,013,879.80x = 103,579,847,898,306,576
  5. Step 5: Solve for x
    x = 103,579,847,898,306,576/312,013,879.80
  6. Step 6: Final answer
    x = 331,971,923.70

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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.