Home / 401,809,981.81-554,479,033.72-223,205,446.55

Finding the Fourth Proportional to 401,809,981.81, 554,479,033.72 and 223,205,446.55

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Solution

The fourth proportional to 401,809,981.81, 554,479,033.72 and 223,205,446.55 is: 308,013,105.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,809,981.81 : 554,479,033.72 = 223,205,446.55 : x
  2. Step 2: Convert to fraction form
    401,809,981.81/554,479,033.72 = 223,205,446.55/x
  3. Step 3: Cross multiply
    401,809,981.81x = 554,479,033.72 × 223,205,446.55
  4. Step 4: Simplify right side
    401,809,981.81x = 123,762,740,322,216,752
  5. Step 5: Solve for x
    x = 123,762,740,322,216,752/401,809,981.81
  6. Step 6: Final answer
    x = 308,013,105.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.