Home / 312,013,892.80-468,020,839.20-221,314,628.80

Finding the Fourth Proportional to 312,013,892.80, 468,020,839.20 and 221,314,628.80

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Solution

The fourth proportional to 312,013,892.80, 468,020,839.20 and 221,314,628.80 is: 331,971,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,013,892.80 : 468,020,839.20 = 221,314,628.80 : x
  2. Step 2: Convert to fraction form
    312,013,892.80/468,020,839.20 = 221,314,628.80/x
  3. Step 3: Cross multiply
    312,013,892.80x = 468,020,839.20 × 221,314,628.80
  4. Step 4: Simplify right side
    312,013,892.80x = 103,579,858,298,212,496
  5. Step 5: Solve for x
    x = 103,579,858,298,212,496/312,013,892.80
  6. Step 6: Final answer
    x = 331,971,943.20

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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.