Home / 288,869.07-433,406.15-128,930.44

Finding the Fourth Proportional to 288,869.07, 433,406.15 and 128,930.44

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Solution

The fourth proportional to 288,869.07, 433,406.15 and 128,930.44 is: 193,441.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,869.07 : 433,406.15 = 128,930.44 : x
  2. Step 2: Convert to fraction form
    288,869.07/433,406.15 = 128,930.44/x
  3. Step 3: Cross multiply
    288,869.07x = 433,406.15 × 128,930.44
  4. Step 4: Simplify right side
    288,869.07x = 55,879,245,618.21
  5. Step 5: Solve for x
    x = 55,879,245,618.21/288,869.07
  6. Step 6: Final answer
    x = 193,441.43

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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.