Home / 379,357.74-523,519.20-209,595.78

Finding the Fourth Proportional to 379,357.74, 523,519.20 and 209,595.78

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Solution

The fourth proportional to 379,357.74, 523,519.20 and 209,595.78 is: 289,245.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,357.74 : 523,519.20 = 209,595.78 : x
  2. Step 2: Convert to fraction form
    379,357.74/523,519.20 = 209,595.78/x
  3. Step 3: Cross multiply
    379,357.74x = 523,519.20 × 209,595.78
  4. Step 4: Simplify right side
    379,357.74x = 109,727,415,068.98
  5. Step 5: Solve for x
    x = 109,727,415,068.98/379,357.74
  6. Step 6: Final answer
    x = 289,245.23

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1.5x scale

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.