Home / 430,181.99-645,134.83-141,928.81

Finding the Fourth Proportional to 430,181.99, 645,134.83 and 141,928.81

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Solution

The fourth proportional to 430,181.99, 645,134.83 and 141,928.81 is: 212,847.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,181.99 : 645,134.83 = 141,928.81 : x
  2. Step 2: Convert to fraction form
    430,181.99/645,134.83 = 141,928.81/x
  3. Step 3: Cross multiply
    430,181.99x = 645,134.83 × 141,928.81
  4. Step 4: Simplify right side
    430,181.99x = 91,563,216,743.79
  5. Step 5: Solve for x
    x = 91,563,216,743.79/430,181.99
  6. Step 6: Final answer
    x = 212,847.63

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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.