Home / 430,632.45-645,972.98-131,122.80

Finding the Fourth Proportional to 430,632.45, 645,972.98 and 131,122.80

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Solution

The fourth proportional to 430,632.45, 645,972.98 and 131,122.80 is: 196,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,632.45 : 645,972.98 = 131,122.80 : x
  2. Step 2: Convert to fraction form
    430,632.45/645,972.98 = 131,122.80/x
  3. Step 3: Cross multiply
    430,632.45x = 645,972.98 × 131,122.80
  4. Step 4: Simplify right side
    430,632.45x = 84,701,785,206.33
  5. Step 5: Solve for x
    x = 84,701,785,206.33/430,632.45
  6. Step 6: Final answer
    x = 196,691.60

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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.