Home / 429,965.37-645,207.27-149,679.45

Finding the Fourth Proportional to 429,965.37, 645,207.27 and 149,679.45

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Solution

The fourth proportional to 429,965.37, 645,207.27 and 149,679.45 is: 224,609.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,965.37 : 645,207.27 = 149,679.45 : x
  2. Step 2: Convert to fraction form
    429,965.37/645,207.27 = 149,679.45/x
  3. Step 3: Cross multiply
    429,965.37x = 645,207.27 × 149,679.45
  4. Step 4: Simplify right side
    429,965.37x = 96,574,269,309.60
  5. Step 5: Solve for x
    x = 96,574,269,309.60/429,965.37
  6. Step 6: Final answer
    x = 224,609.41

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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.