Home / 219,257.45-328,885.67-86,044.55

Finding the Fourth Proportional to 219,257.45, 328,885.67 and 86,044.55

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Solution

The fourth proportional to 219,257.45, 328,885.67 and 86,044.55 is: 129,066.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,257.45 : 328,885.67 = 86,044.55 : x
  2. Step 2: Convert to fraction form
    219,257.45/328,885.67 = 86,044.55/x
  3. Step 3: Cross multiply
    219,257.45x = 328,885.67 × 86,044.55
  4. Step 4: Simplify right side
    219,257.45x = 28,298,817,563.28
  5. Step 5: Solve for x
    x = 28,298,817,563.28/219,257.45
  6. Step 6: Final answer
    x = 129,066.62

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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.