Home / 280,259,315.20-420,388,972.80-151,119,152.20

Finding the Fourth Proportional to 280,259,315.20, 420,388,972.80 and 151,119,152.20

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Solution

The fourth proportional to 280,259,315.20, 420,388,972.80 and 151,119,152.20 is: 226,678,728.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,259,315.20 : 420,388,972.80 = 151,119,152.20 : x
  2. Step 2: Convert to fraction form
    280,259,315.20/420,388,972.80 = 151,119,152.20/x
  3. Step 3: Cross multiply
    280,259,315.20x = 420,388,972.80 × 151,119,152.20
  4. Step 4: Simplify right side
    280,259,315.20x = 63,528,825,163,764,856
  5. Step 5: Solve for x
    x = 63,528,825,163,764,856/280,259,315.20
  6. Step 6: Final answer
    x = 226,678,728.30

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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.