Home / 379,442.16-523,630.36-209,676.28

Finding the Fourth Proportional to 379,442.16, 523,630.36 and 209,676.28

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Solution

The fourth proportional to 379,442.16, 523,630.36 and 209,676.28 is: 289,353.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,442.16 : 523,630.36 = 209,676.28 : x
  2. Step 2: Convert to fraction form
    379,442.16/523,630.36 = 209,676.28/x
  3. Step 3: Cross multiply
    379,442.16x = 523,630.36 × 209,676.28
  4. Step 4: Simplify right side
    379,442.16x = 109,792,865,979.86
  5. Step 5: Solve for x
    x = 109,792,865,979.86/379,442.16
  6. Step 6: Final answer
    x = 289,353.37

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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.