Home / 280,314,491.10-420,471,736.65-165,428,756.70

Finding the Fourth Proportional to 280,314,491.10, 420,471,736.65 and 165,428,756.70

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Solution

The fourth proportional to 280,314,491.10, 420,471,736.65 and 165,428,756.70 is: 248,143,135.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,314,491.10 : 420,471,736.65 = 165,428,756.70 : x
  2. Step 2: Convert to fraction form
    280,314,491.10/420,471,736.65 = 165,428,756.70/x
  3. Step 3: Cross multiply
    280,314,491.10x = 420,471,736.65 × 165,428,756.70
  4. Step 4: Simplify right side
    280,314,491.10x = 69,558,116,621,499,312
  5. Step 5: Solve for x
    x = 69,558,116,621,499,312/280,314,491.10
  6. Step 6: Final answer
    x = 248,143,135.05

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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.