Home / 420,164,338.20-630,356,732.10-161,388,000.60

Finding the Fourth Proportional to 420,164,338.20, 630,356,732.10 and 161,388,000.60

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Solution

The fourth proportional to 420,164,338.20, 630,356,732.10 and 161,388,000.60 is: 242,124,339.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,164,338.20 : 630,356,732.10 = 161,388,000.60 : x
  2. Step 2: Convert to fraction form
    420,164,338.20/630,356,732.10 = 161,388,000.60/x
  3. Step 3: Cross multiply
    420,164,338.20x = 630,356,732.10 × 161,388,000.60
  4. Step 4: Simplify right side
    420,164,338.20x = 101,732,012,658,368,832
  5. Step 5: Solve for x
    x = 101,732,012,658,368,832/420,164,338.20
  6. Step 6: Final answer
    x = 242,124,339.00

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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.