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Finding the Fourth Proportional to 371,688.51, 512,932.19 and 228,542.07

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Solution

The fourth proportional to 371,688.51, 512,932.19 and 228,542.07 is: 315,389.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,688.51 : 512,932.19 = 228,542.07 : x
  2. Step 2: Convert to fraction form
    371,688.51/512,932.19 = 228,542.07/x
  3. Step 3: Cross multiply
    371,688.51x = 512,932.19 × 228,542.07
  4. Step 4: Simplify right side
    371,688.51x = 117,226,583,329.52
  5. Step 5: Solve for x
    x = 117,226,583,329.52/371,688.51
  6. Step 6: Final answer
    x = 315,389.31

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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.