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Finding the Fourth Proportional to 291,310.59, 437,017.11 and 120,531.81

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Solution

The fourth proportional to 291,310.59, 437,017.11 and 120,531.81 is: 180,818.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,310.59 : 437,017.11 = 120,531.81 : x
  2. Step 2: Convert to fraction form
    291,310.59/437,017.11 = 120,531.81/x
  3. Step 3: Cross multiply
    291,310.59x = 437,017.11 × 120,531.81
  4. Step 4: Simplify right side
    291,310.59x = 52,674,463,269.27
  5. Step 5: Solve for x
    x = 52,674,463,269.27/291,310.59
  6. Step 6: Final answer
    x = 180,818.91

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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.