Home / 286,821.78-431,940.11-249,828.67

Finding the Fourth Proportional to 286,821.78, 431,940.11 and 249,828.67

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Solution

The fourth proportional to 286,821.78, 431,940.11 and 249,828.67 is: 376,230.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,821.78 : 431,940.11 = 249,828.67 : x
  2. Step 2: Convert to fraction form
    286,821.78/431,940.11 = 249,828.67/x
  3. Step 3: Cross multiply
    286,821.78x = 431,940.11 × 249,828.67
  4. Step 4: Simplify right side
    286,821.78x = 107,911,023,897.02
  5. Step 5: Solve for x
    x = 107,911,023,897.02/286,821.78
  6. Step 6: Final answer
    x = 376,230.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.