Home / 281,824,014.40-422,736,021.60-128,769,006.40

Finding the Fourth Proportional to 281,824,014.40, 422,736,021.60 and 128,769,006.40

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Solution

The fourth proportional to 281,824,014.40, 422,736,021.60 and 128,769,006.40 is: 193,153,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,824,014.40 : 422,736,021.60 = 128,769,006.40 : x
  2. Step 2: Convert to fraction form
    281,824,014.40/422,736,021.60 = 128,769,006.40/x
  3. Step 3: Cross multiply
    281,824,014.40x = 422,736,021.60 × 128,769,006.40
  4. Step 4: Simplify right side
    281,824,014.40x = 54,435,297,470,920,944
  5. Step 5: Solve for x
    x = 54,435,297,470,920,944/281,824,014.40
  6. Step 6: Final answer
    x = 193,153,509.60

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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.