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Finding the Fourth Proportional to 674,215.27, 930,420.29 and 368,295.90

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Solution

The fourth proportional to 674,215.27, 930,420.29 and 368,295.90 is: 508,250.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,215.27 : 930,420.29 = 368,295.90 : x
  2. Step 2: Convert to fraction form
    674,215.27/930,420.29 = 368,295.90/x
  3. Step 3: Cross multiply
    674,215.27x = 930,420.29 × 368,295.90
  4. Step 4: Simplify right side
    674,215.27x = 342,669,978,083.81
  5. Step 5: Solve for x
    x = 342,669,978,083.81/674,215.27
  6. Step 6: Final answer
    x = 508,250.10

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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.