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Finding the Fourth Proportional to 291,063.55, 436,595.34 and 80,701.49

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Solution

The fourth proportional to 291,063.55, 436,595.34 and 80,701.49 is: 121,052.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,063.55 : 436,595.34 = 80,701.49 : x
  2. Step 2: Convert to fraction form
    291,063.55/436,595.34 = 80,701.49/x
  3. Step 3: Cross multiply
    291,063.55x = 436,595.34 × 80,701.49
  4. Step 4: Simplify right side
    291,063.55x = 35,233,894,465.06
  5. Step 5: Solve for x
    x = 35,233,894,465.06/291,063.55
  6. Step 6: Final answer
    x = 121,052.24

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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.