Home / 279,984,000.40-419,976,000.60-172,339,277.20

Finding the Fourth Proportional to 279,984,000.40, 419,976,000.60 and 172,339,277.20

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Solution

The fourth proportional to 279,984,000.40, 419,976,000.60 and 172,339,277.20 is: 258,508,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,984,000.40 : 419,976,000.60 = 172,339,277.20 : x
  2. Step 2: Convert to fraction form
    279,984,000.40/419,976,000.60 = 172,339,277.20/x
  3. Step 3: Cross multiply
    279,984,000.40x = 419,976,000.60 × 172,339,277.20
  4. Step 4: Simplify right side
    279,984,000.40x = 72,378,360,384,750,768
  5. Step 5: Solve for x
    x = 72,378,360,384,750,768/279,984,000.40
  6. Step 6: Final answer
    x = 258,508,915.80

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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.