Home / 312,013,959.80-468,020,939.70-221,314,695.80

Finding the Fourth Proportional to 312,013,959.80, 468,020,939.70 and 221,314,695.80

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Solution

The fourth proportional to 312,013,959.80, 468,020,939.70 and 221,314,695.80 is: 331,972,043.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,013,959.80 : 468,020,939.70 = 221,314,695.80 : x
  2. Step 2: Convert to fraction form
    312,013,959.80/468,020,939.70 = 221,314,695.80/x
  3. Step 3: Cross multiply
    312,013,959.80x = 468,020,939.70 × 221,314,695.80
  4. Step 4: Simplify right side
    312,013,959.80x = 103,579,911,897,735,648
  5. Step 5: Solve for x
    x = 103,579,911,897,735,648/312,013,959.80
  6. Step 6: Final answer
    x = 331,972,043.70

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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.