Home / 458,975.08-687,970.41-221,991.76

Finding the Fourth Proportional to 458,975.08, 687,970.41 and 221,991.76

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Solution

The fourth proportional to 458,975.08, 687,970.41 and 221,991.76 is: 332,749.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,975.08 : 687,970.41 = 221,991.76 : x
  2. Step 2: Convert to fraction form
    458,975.08/687,970.41 = 221,991.76/x
  3. Step 3: Cross multiply
    458,975.08x = 687,970.41 × 221,991.76
  4. Step 4: Simplify right side
    458,975.08x = 152,723,762,143.82
  5. Step 5: Solve for x
    x = 152,723,762,143.82/458,975.08
  6. Step 6: Final answer
    x = 332,749.57

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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.