Home / 379,424.52-523,616.40-209,669.58

Finding the Fourth Proportional to 379,424.52, 523,616.40 and 209,669.58

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Solution

The fourth proportional to 379,424.52, 523,616.40 and 209,669.58 is: 289,349.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,424.52 : 523,616.40 = 209,669.58 : x
  2. Step 2: Convert to fraction form
    379,424.52/523,616.40 = 209,669.58/x
  3. Step 3: Cross multiply
    379,424.52x = 523,616.40 × 209,669.58
  4. Step 4: Simplify right side
    379,424.52x = 109,786,430,669.11
  5. Step 5: Solve for x
    x = 109,786,430,669.11/379,424.52
  6. Step 6: Final answer
    x = 289,349.86

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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.