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Finding the Fourth Proportional to 296,779.19, 445,164.78 and 72,138.97

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Solution

The fourth proportional to 296,779.19, 445,164.78 and 72,138.97 is: 108,207.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,779.19 : 445,164.78 = 72,138.97 : x
  2. Step 2: Convert to fraction form
    296,779.19/445,164.78 = 72,138.97/x
  3. Step 3: Cross multiply
    296,779.19x = 445,164.78 × 72,138.97
  4. Step 4: Simplify right side
    296,779.19x = 32,113,729,130.67
  5. Step 5: Solve for x
    x = 32,113,729,130.67/296,779.19
  6. Step 6: Final answer
    x = 108,207.48

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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.