Home / 312,013,412.80-468,020,119.20-221,314,148.80

Finding the Fourth Proportional to 312,013,412.80, 468,020,119.20 and 221,314,148.80

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Solution

The fourth proportional to 312,013,412.80, 468,020,119.20 and 221,314,148.80 is: 331,971,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,013,412.80 : 468,020,119.20 = 221,314,148.80 : x
  2. Step 2: Convert to fraction form
    312,013,412.80/468,020,119.20 = 221,314,148.80/x
  3. Step 3: Cross multiply
    312,013,412.80x = 468,020,119.20 × 221,314,148.80
  4. Step 4: Simplify right side
    312,013,412.80x = 103,579,474,302,022,544
  5. Step 5: Solve for x
    x = 103,579,474,302,022,544/312,013,412.80
  6. Step 6: Final answer
    x = 331,971,223.20

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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.