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Finding the Fourth Proportional to 468,478.55, 646,500.62 and 253,618.63

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Solution

The fourth proportional to 468,478.55, 646,500.62 and 253,618.63 is: 349,993.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,478.55 : 646,500.62 = 253,618.63 : x
  2. Step 2: Convert to fraction form
    468,478.55/646,500.62 = 253,618.63/x
  3. Step 3: Cross multiply
    468,478.55x = 646,500.62 × 253,618.63
  4. Step 4: Simplify right side
    468,478.55x = 163,964,600,556.35
  5. Step 5: Solve for x
    x = 163,964,600,556.35/468,478.55
  6. Step 6: Final answer
    x = 349,993.83

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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.