Home / 280,615,515.20-420,923,272.80-177,303,384.80

Finding the Fourth Proportional to 280,615,515.20, 420,923,272.80 and 177,303,384.80

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Solution

The fourth proportional to 280,615,515.20, 420,923,272.80 and 177,303,384.80 is: 265,955,077.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,615,515.20 : 420,923,272.80 = 177,303,384.80 : x
  2. Step 2: Convert to fraction form
    280,615,515.20/420,923,272.80 = 177,303,384.80/x
  3. Step 3: Cross multiply
    280,615,515.20x = 420,923,272.80 × 177,303,384.80
  4. Step 4: Simplify right side
    280,615,515.20x = 74,631,121,008,533,776
  5. Step 5: Solve for x
    x = 74,631,121,008,533,776/280,615,515.20
  6. Step 6: Final answer
    x = 265,955,077.20

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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.