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Finding the Fourth Proportional to 396,131.64, 546,731.52 and 235,075.50

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Solution

The fourth proportional to 396,131.64, 546,731.52 and 235,075.50 is: 324,445.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,131.64 : 546,731.52 = 235,075.50 : x
  2. Step 2: Convert to fraction form
    396,131.64/546,731.52 = 235,075.50/x
  3. Step 3: Cross multiply
    396,131.64x = 546,731.52 × 235,075.50
  4. Step 4: Simplify right side
    396,131.64x = 128,523,185,429.76
  5. Step 5: Solve for x
    x = 128,523,185,429.76/396,131.64
  6. Step 6: Final answer
    x = 324,445.64

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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.