Home / 409,917.60-614,962.80-173,138.40

Finding the Fourth Proportional to 409,917.60, 614,962.80 and 173,138.40

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Solution

The fourth proportional to 409,917.60, 614,962.80 and 173,138.40 is: 259,744.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,917.60 : 614,962.80 = 173,138.40 : x
  2. Step 2: Convert to fraction form
    409,917.60/614,962.80 = 173,138.40/x
  3. Step 3: Cross multiply
    409,917.60x = 614,962.80 × 173,138.40
  4. Step 4: Simplify right side
    409,917.60x = 106,473,675,251.52
  5. Step 5: Solve for x
    x = 106,473,675,251.52/409,917.60
  6. Step 6: Final answer
    x = 259,744.09

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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.