Home / 648,081.60-972,305.46-221,709.66

Finding the Fourth Proportional to 648,081.60, 972,305.46 and 221,709.66

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Solution

The fourth proportional to 648,081.60, 972,305.46 and 221,709.66 is: 332,627.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,081.60 : 972,305.46 = 221,709.66 : x
  2. Step 2: Convert to fraction form
    648,081.60/972,305.46 = 221,709.66/x
  3. Step 3: Cross multiply
    648,081.60x = 972,305.46 × 221,709.66
  4. Step 4: Simplify right side
    648,081.60x = 215,569,512,952.74
  5. Step 5: Solve for x
    x = 215,569,512,952.74/648,081.60
  6. Step 6: Final answer
    x = 332,627.12

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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.