Home / 279,937,013.40-419,905,520.10-126,588,072.60

Finding the Fourth Proportional to 279,937,013.40, 419,905,520.10 and 126,588,072.60

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Solution

The fourth proportional to 279,937,013.40, 419,905,520.10 and 126,588,072.60 is: 189,882,108.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,013.40 : 419,905,520.10 = 126,588,072.60 : x
  2. Step 2: Convert to fraction form
    279,937,013.40/419,905,520.10 = 126,588,072.60/x
  3. Step 3: Cross multiply
    279,937,013.40x = 419,905,520.10 × 126,588,072.60
  4. Step 4: Simplify right side
    279,937,013.40x = 53,155,030,463,559,560
  5. Step 5: Solve for x
    x = 53,155,030,463,559,560/279,937,013.40
  6. Step 6: Final answer
    x = 189,882,108.90

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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.