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Finding the Fourth Proportional to 535,134.88, 738,426 and 308,855.20

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Solution

The fourth proportional to 535,134.88, 738,426 and 308,855.20 is: 426,185.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,134.88 : 738,426 = 308,855.20 : x
  2. Step 2: Convert to fraction form
    535,134.88/738,426 = 308,855.20/x
  3. Step 3: Cross multiply
    535,134.88x = 738,426 × 308,855.20
  4. Step 4: Simplify right side
    535,134.88x = 228,066,709,915.20
  5. Step 5: Solve for x
    x = 228,066,709,915.20/535,134.88
  6. Step 6: Final answer
    x = 426,185.47

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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.