Home / 379,550.79-523,780.25-209,784.96

Finding the Fourth Proportional to 379,550.79, 523,780.25 and 209,784.96

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Solution

The fourth proportional to 379,550.79, 523,780.25 and 209,784.96 is: 289,503.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,550.79 : 523,780.25 = 209,784.96 : x
  2. Step 2: Convert to fraction form
    379,550.79/523,780.25 = 209,784.96/x
  3. Step 3: Cross multiply
    379,550.79x = 523,780.25 × 209,784.96
  4. Step 4: Simplify right side
    379,550.79x = 109,881,217,746.12
  5. Step 5: Solve for x
    x = 109,881,217,746.12/379,550.79
  6. Step 6: Final answer
    x = 289,503.33

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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.