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Finding the Fourth Proportional to 323,012.76, 485,307.54 and 305,108.52

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Solution

The fourth proportional to 323,012.76, 485,307.54 and 305,108.52 is: 458,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,012.76 : 485,307.54 = 305,108.52 : x
  2. Step 2: Convert to fraction form
    323,012.76/485,307.54 = 305,108.52/x
  3. Step 3: Cross multiply
    323,012.76x = 485,307.54 × 305,108.52
  4. Step 4: Simplify right side
    323,012.76x = 148,071,465,274.24
  5. Step 5: Solve for x
    x = 148,071,465,274.24/323,012.76
  6. Step 6: Final answer
    x = 458,407.48

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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.