Home / 280,379,528.40-420,443,321.40-107,798,984.40

Finding the Fourth Proportional to 280,379,528.40, 420,443,321.40 and 107,798,984.40

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Solution

The fourth proportional to 280,379,528.40, 420,443,321.40 and 107,798,984.40 is: 161,650,043.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,379,528.40 : 420,443,321.40 = 107,798,984.40 : x
  2. Step 2: Convert to fraction form
    280,379,528.40/420,443,321.40 = 107,798,984.40/x
  3. Step 3: Cross multiply
    280,379,528.40x = 420,443,321.40 × 107,798,984.40
  4. Step 4: Simplify right side
    280,379,528.40x = 45,323,363,044,682,784
  5. Step 5: Solve for x
    x = 45,323,363,044,682,784/280,379,528.40
  6. Step 6: Final answer
    x = 161,650,043.79

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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.