Home / 286,815.86-428,964.51-255,446.90

Finding the Fourth Proportional to 286,815.86, 428,964.51 and 255,446.90

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Solution

The fourth proportional to 286,815.86, 428,964.51 and 255,446.90 is: 382,048.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,815.86 : 428,964.51 = 255,446.90 : x
  2. Step 2: Convert to fraction form
    286,815.86/428,964.51 = 255,446.90/x
  3. Step 3: Cross multiply
    286,815.86x = 428,964.51 × 255,446.90
  4. Step 4: Simplify right side
    286,815.86x = 109,577,654,289.52
  5. Step 5: Solve for x
    x = 109,577,654,289.52/286,815.86
  6. Step 6: Final answer
    x = 382,048.80

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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.