Home / 280,839,009.60-420,975,079.20-127,595,044.80

Finding the Fourth Proportional to 280,839,009.60, 420,975,079.20 and 127,595,044.80

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Solution

The fourth proportional to 280,839,009.60, 420,975,079.20 and 127,595,044.80 is: 191,263,792.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,839,009.60 : 420,975,079.20 = 127,595,044.80 : x
  2. Step 2: Convert to fraction form
    280,839,009.60/420,975,079.20 = 127,595,044.80/x
  3. Step 3: Cross multiply
    280,839,009.60x = 420,975,079.20 × 127,595,044.80
  4. Step 4: Simplify right side
    280,839,009.60x = 53,714,334,090,207,544
  5. Step 5: Solve for x
    x = 53,714,334,090,207,544/280,839,009.60
  6. Step 6: Final answer
    x = 191,263,792.61

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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.