Home / 648,147.62-972,372.64-221,686.76

Finding the Fourth Proportional to 648,147.62, 972,372.64 and 221,686.76

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Solution

The fourth proportional to 648,147.62, 972,372.64 and 221,686.76 is: 332,581.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,147.62 : 972,372.64 = 221,686.76 : x
  2. Step 2: Convert to fraction form
    648,147.62/972,372.64 = 221,686.76/x
  3. Step 3: Cross multiply
    648,147.62x = 972,372.64 × 221,686.76
  4. Step 4: Simplify right side
    648,147.62x = 215,562,140,074.25
  5. Step 5: Solve for x
    x = 215,562,140,074.25/648,147.62
  6. Step 6: Final answer
    x = 332,581.86

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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.