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Finding the Fourth Proportional to 397,918.34, 549,110.50 and 216,626.50

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Solution

The fourth proportional to 397,918.34, 549,110.50 and 216,626.50 is: 298,935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,918.34 : 549,110.50 = 216,626.50 : x
  2. Step 2: Convert to fraction form
    397,918.34/549,110.50 = 216,626.50/x
  3. Step 3: Cross multiply
    397,918.34x = 549,110.50 × 216,626.50
  4. Step 4: Simplify right side
    397,918.34x = 118,951,885,728.25
  5. Step 5: Solve for x
    x = 118,951,885,728.25/397,918.34
  6. Step 6: Final answer
    x = 298,935.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.