Home / 425,336,555.40-637,752,890.70-221,263,211.40

Finding the Fourth Proportional to 425,336,555.40, 637,752,890.70 and 221,263,211.40

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Solution

The fourth proportional to 425,336,555.40, 637,752,890.70 and 221,263,211.40 is: 331,763,754.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,336,555.40 : 637,752,890.70 = 221,263,211.40 : x
  2. Step 2: Convert to fraction form
    425,336,555.40/637,752,890.70 = 221,263,211.40/x
  3. Step 3: Cross multiply
    425,336,555.40x = 637,752,890.70 × 221,263,211.40
  4. Step 4: Simplify right side
    425,336,555.40x = 141,111,252,675,915,216
  5. Step 5: Solve for x
    x = 141,111,252,675,915,216/425,336,555.40
  6. Step 6: Final answer
    x = 331,763,754.81

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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.