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Finding the Fourth Proportional to 535,273.80, 738,676.71 and 308,919.30

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Solution

The fourth proportional to 535,273.80, 738,676.71 and 308,919.30 is: 426,307.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,273.80 : 738,676.71 = 308,919.30 : x
  2. Step 2: Convert to fraction form
    535,273.80/738,676.71 = 308,919.30/x
  3. Step 3: Cross multiply
    535,273.80x = 738,676.71 × 308,919.30
  4. Step 4: Simplify right side
    535,273.80x = 228,191,492,179.50
  5. Step 5: Solve for x
    x = 228,191,492,179.50/535,273.80
  6. Step 6: Final answer
    x = 426,307.98

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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.