Home / 430,238.88-645,464.16-149,758.56

Finding the Fourth Proportional to 430,238.88, 645,464.16 and 149,758.56

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Solution

The fourth proportional to 430,238.88, 645,464.16 and 149,758.56 is: 224,674.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,238.88 : 645,464.16 = 149,758.56 : x
  2. Step 2: Convert to fraction form
    430,238.88/645,464.16 = 149,758.56/x
  3. Step 3: Cross multiply
    430,238.88x = 645,464.16 × 149,758.56
  4. Step 4: Simplify right side
    430,238.88x = 96,663,783,133.21
  5. Step 5: Solve for x
    x = 96,663,783,133.21/430,238.88
  6. Step 6: Final answer
    x = 224,674.68

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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.