Home / 219,154.04-328,749.76-76,986.89

Finding the Fourth Proportional to 219,154.04, 328,749.76 and 76,986.89

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Solution

The fourth proportional to 219,154.04, 328,749.76 and 76,986.89 is: 115,486.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,154.04 : 328,749.76 = 76,986.89 : x
  2. Step 2: Convert to fraction form
    219,154.04/328,749.76 = 76,986.89/x
  3. Step 3: Cross multiply
    219,154.04x = 328,749.76 × 76,986.89
  4. Step 4: Simplify right side
    219,154.04x = 25,309,422,432.52
  5. Step 5: Solve for x
    x = 25,309,422,432.52/219,154.04
  6. Step 6: Final answer
    x = 115,486.91

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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.