Home / 348,478.20-521,939.70-286,270.20

Finding the Fourth Proportional to 348,478.20, 521,939.70 and 286,270.20

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Solution

The fourth proportional to 348,478.20, 521,939.70 and 286,270.20 is: 428,766.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,478.20 : 521,939.70 = 286,270.20 : x
  2. Step 2: Convert to fraction form
    348,478.20/521,939.70 = 286,270.20/x
  3. Step 3: Cross multiply
    348,478.20x = 521,939.70 × 286,270.20
  4. Step 4: Simplify right side
    348,478.20x = 149,415,782,306.94
  5. Step 5: Solve for x
    x = 149,415,782,306.94/348,478.20
  6. Step 6: Final answer
    x = 428,766.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.