Home / 312,014,518.80-468,021,778.20-221,315,254.80

Finding the Fourth Proportional to 312,014,518.80, 468,021,778.20 and 221,315,254.80

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Solution

The fourth proportional to 312,014,518.80, 468,021,778.20 and 221,315,254.80 is: 331,972,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,014,518.80 : 468,021,778.20 = 221,315,254.80 : x
  2. Step 2: Convert to fraction form
    312,014,518.80/468,021,778.20 = 221,315,254.80/x
  3. Step 3: Cross multiply
    312,014,518.80x = 468,021,778.20 × 221,315,254.80
  4. Step 4: Simplify right side
    312,014,518.80x = 103,580,359,094,282,096
  5. Step 5: Solve for x
    x = 103,580,359,094,282,096/312,014,518.80
  6. Step 6: Final answer
    x = 331,972,882.20

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1.5x scale

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.