Home / 379,291.23-523,377.32-209,515.23

Finding the Fourth Proportional to 379,291.23, 523,377.32 and 209,515.23

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Solution

The fourth proportional to 379,291.23, 523,377.32 and 209,515.23 is: 289,106.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,291.23 : 523,377.32 = 209,515.23 : x
  2. Step 2: Convert to fraction form
    379,291.23/523,377.32 = 209,515.23/x
  3. Step 3: Cross multiply
    379,291.23x = 523,377.32 × 209,515.23
  4. Step 4: Simplify right side
    379,291.23x = 109,655,518,529.01
  5. Step 5: Solve for x
    x = 109,655,518,529.01/379,291.23
  6. Step 6: Final answer
    x = 289,106.39

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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.