Home / 312,014,721.80-468,022,082.70-221,315,457.80

Finding the Fourth Proportional to 312,014,721.80, 468,022,082.70 and 221,315,457.80

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Solution

The fourth proportional to 312,014,721.80, 468,022,082.70 and 221,315,457.80 is: 331,973,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,014,721.80 : 468,022,082.70 = 221,315,457.80 : x
  2. Step 2: Convert to fraction form
    312,014,721.80/468,022,082.70 = 221,315,457.80/x
  3. Step 3: Cross multiply
    312,014,721.80x = 468,022,082.70 × 221,315,457.80
  4. Step 4: Simplify right side
    312,014,721.80x = 103,580,521,493,259,968
  5. Step 5: Solve for x
    x = 103,580,521,493,259,968/312,014,721.80
  6. Step 6: Final answer
    x = 331,973,186.70

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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.