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Finding the Fourth Proportional to 351,307.98, 526,797.95 and 126,638.82

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Solution

The fourth proportional to 351,307.98, 526,797.95 and 126,638.82 is: 189,899.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,307.98 : 526,797.95 = 126,638.82 : x
  2. Step 2: Convert to fraction form
    351,307.98/526,797.95 = 126,638.82/x
  3. Step 3: Cross multiply
    351,307.98x = 526,797.95 × 126,638.82
  4. Step 4: Simplify right side
    351,307.98x = 66,713,070,133.22
  5. Step 5: Solve for x
    x = 66,713,070,133.22/351,307.98
  6. Step 6: Final answer
    x = 189,899.10

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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.