Home / 403,131.70-556,307.80-221,826.67

Finding the Fourth Proportional to 403,131.70, 556,307.80 and 221,826.67

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Solution

The fourth proportional to 403,131.70, 556,307.80 and 221,826.67 is: 306,113.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,131.70 : 556,307.80 = 221,826.67 : x
  2. Step 2: Convert to fraction form
    403,131.70/556,307.80 = 221,826.67/x
  3. Step 3: Cross multiply
    403,131.70x = 556,307.80 × 221,826.67
  4. Step 4: Simplify right side
    403,131.70x = 123,403,904,823.69
  5. Step 5: Solve for x
    x = 123,403,904,823.69/403,131.70
  6. Step 6: Final answer
    x = 306,113.12

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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.