Home / 389,783.20-584,674.80-179,831.20

Finding the Fourth Proportional to 389,783.20, 584,674.80 and 179,831.20

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Solution

The fourth proportional to 389,783.20, 584,674.80 and 179,831.20 is: 269,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,783.20 : 584,674.80 = 179,831.20 : x
  2. Step 2: Convert to fraction form
    389,783.20/584,674.80 = 179,831.20/x
  3. Step 3: Cross multiply
    389,783.20x = 584,674.80 × 179,831.20
  4. Step 4: Simplify right side
    389,783.20x = 105,142,770,893.76
  5. Step 5: Solve for x
    x = 105,142,770,893.76/389,783.20
  6. Step 6: Final answer
    x = 269,746.80

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Similar ratio
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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.