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Finding the Fourth Proportional to 383,123.36, 528,672.39 and 213,373.28

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Solution

The fourth proportional to 383,123.36, 528,672.39 and 213,373.28 is: 294,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,123.36 : 528,672.39 = 213,373.28 : x
  2. Step 2: Convert to fraction form
    383,123.36/528,672.39 = 213,373.28/x
  3. Step 3: Cross multiply
    383,123.36x = 528,672.39 × 213,373.28
  4. Step 4: Simplify right side
    383,123.36x = 112,804,561,638.97
  5. Step 5: Solve for x
    x = 112,804,561,638.97/383,123.36
  6. Step 6: Final answer
    x = 294,434.05

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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.