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Finding the Fourth Proportional to 297,987.93, 446,971.94 and 129,508.40

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Solution

The fourth proportional to 297,987.93, 446,971.94 and 129,508.40 is: 194,258.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,987.93 : 446,971.94 = 129,508.40 : x
  2. Step 2: Convert to fraction form
    297,987.93/446,971.94 = 129,508.40/x
  3. Step 3: Cross multiply
    297,987.93x = 446,971.94 × 129,508.40
  4. Step 4: Simplify right side
    297,987.93x = 57,886,621,749.84
  5. Step 5: Solve for x
    x = 57,886,621,749.84/297,987.93
  6. Step 6: Final answer
    x = 194,258.28

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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.