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Finding the Fourth Proportional to 286,198.88, 429,420.36 and 143,969.36

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Solution

The fourth proportional to 286,198.88, 429,420.36 and 143,969.36 is: 216,015.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,198.88 : 429,420.36 = 143,969.36 : x
  2. Step 2: Convert to fraction form
    286,198.88/429,420.36 = 143,969.36/x
  3. Step 3: Cross multiply
    286,198.88x = 429,420.36 × 143,969.36
  4. Step 4: Simplify right side
    286,198.88x = 61,823,374,400.17
  5. Step 5: Solve for x
    x = 61,823,374,400.17/286,198.88
  6. Step 6: Final answer
    x = 216,015.43

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1.5x scale

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.