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Finding the Fourth Proportional to 297,258.89, 445,888.64 and 139,487.49

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Solution

The fourth proportional to 297,258.89, 445,888.64 and 139,487.49 is: 209,231.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,258.89 : 445,888.64 = 139,487.49 : x
  2. Step 2: Convert to fraction form
    297,258.89/445,888.64 = 139,487.49/x
  3. Step 3: Cross multiply
    297,258.89x = 445,888.64 × 139,487.49
  4. Step 4: Simplify right side
    297,258.89x = 62,195,887,213.11
  5. Step 5: Solve for x
    x = 62,195,887,213.11/297,258.89
  6. Step 6: Final answer
    x = 209,231.38

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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.