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Finding the Fourth Proportional to 486,144.77, 670,879.80 and 268,353.50

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Solution

The fourth proportional to 486,144.77, 670,879.80 and 268,353.50 is: 370,327.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,144.77 : 670,879.80 = 268,353.50 : x
  2. Step 2: Convert to fraction form
    486,144.77/670,879.80 = 268,353.50/x
  3. Step 3: Cross multiply
    486,144.77x = 670,879.80 × 268,353.50
  4. Step 4: Simplify right side
    486,144.77x = 180,032,939,054.90
  5. Step 5: Solve for x
    x = 180,032,939,054.90/486,144.77
  6. Step 6: Final answer
    x = 370,327.84

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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.