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Finding the Fourth Proportional to 367,930.89, 507,366.59 and 307,478.97

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Solution

The fourth proportional to 367,930.89, 507,366.59 and 307,478.97 is: 424,005.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,930.89 : 507,366.59 = 307,478.97 : x
  2. Step 2: Convert to fraction form
    367,930.89/507,366.59 = 307,478.97/x
  3. Step 3: Cross multiply
    367,930.89x = 507,366.59 × 307,478.97
  4. Step 4: Simplify right side
    367,930.89x = 156,004,554,968.22
  5. Step 5: Solve for x
    x = 156,004,554,968.22/367,930.89
  6. Step 6: Final answer
    x = 424,005.05

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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.