Home / 403,603,155.40-556,972,333.14-217,964,153.20

Finding the Fourth Proportional to 403,603,155.40, 556,972,333.14 and 217,964,153.20

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Solution

The fourth proportional to 403,603,155.40, 556,972,333.14 and 217,964,153.20 is: 300,790,519.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,603,155.40 : 556,972,333.14 = 217,964,153.20 : x
  2. Step 2: Convert to fraction form
    403,603,155.40/556,972,333.14 = 217,964,153.20/x
  3. Step 3: Cross multiply
    403,603,155.40x = 556,972,333.14 × 217,964,153.20
  4. Step 4: Simplify right side
    403,603,155.40x = 121,400,002,949,263,456
  5. Step 5: Solve for x
    x = 121,400,002,949,263,456/403,603,155.40
  6. Step 6: Final answer
    x = 300,790,519.91

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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.