Home / 638,911.76-958,454.08-218,074.64

Finding the Fourth Proportional to 638,911.76, 958,454.08 and 218,074.64

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Solution

The fourth proportional to 638,911.76, 958,454.08 and 218,074.64 is: 327,141.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,911.76 : 958,454.08 = 218,074.64 : x
  2. Step 2: Convert to fraction form
    638,911.76/958,454.08 = 218,074.64/x
  3. Step 3: Cross multiply
    638,911.76x = 958,454.08 × 218,074.64
  4. Step 4: Simplify right side
    638,911.76x = 209,014,528,452.53
  5. Step 5: Solve for x
    x = 209,014,528,452.53/638,911.76
  6. Step 6: Final answer
    x = 327,141.46

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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.