Home / 312,013,415.80-468,020,123.70-221,314,151.80

Finding the Fourth Proportional to 312,013,415.80, 468,020,123.70 and 221,314,151.80

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Solution

The fourth proportional to 312,013,415.80, 468,020,123.70 and 221,314,151.80 is: 331,971,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,013,415.80 : 468,020,123.70 = 221,314,151.80 : x
  2. Step 2: Convert to fraction form
    312,013,415.80/468,020,123.70 = 221,314,151.80/x
  3. Step 3: Cross multiply
    312,013,415.80x = 468,020,123.70 × 221,314,151.80
  4. Step 4: Simplify right side
    312,013,415.80x = 103,579,476,701,996,576
  5. Step 5: Solve for x
    x = 103,579,476,701,996,576/312,013,415.80
  6. Step 6: Final answer
    x = 331,971,227.70

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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.