Home / 430,936.15-646,402.46-131,415.85

Finding the Fourth Proportional to 430,936.15, 646,402.46 and 131,415.85

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Solution

The fourth proportional to 430,936.15, 646,402.46 and 131,415.85 is: 197,123.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,936.15 : 646,402.46 = 131,415.85 : x
  2. Step 2: Convert to fraction form
    430,936.15/646,402.46 = 131,415.85/x
  3. Step 3: Cross multiply
    430,936.15x = 646,402.46 × 131,415.85
  4. Step 4: Simplify right side
    430,936.15x = 84,947,528,722.99
  5. Step 5: Solve for x
    x = 84,947,528,722.99/430,936.15
  6. Step 6: Final answer
    x = 197,123.24

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1.5x scale

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.