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Finding the Fourth Proportional to 371,343.55, 557,017.64 and 131,405.22

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Solution

The fourth proportional to 371,343.55, 557,017.64 and 131,405.22 is: 197,108.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,343.55 : 557,017.64 = 131,405.22 : x
  2. Step 2: Convert to fraction form
    371,343.55/557,017.64 = 131,405.22/x
  3. Step 3: Cross multiply
    371,343.55x = 557,017.64 × 131,405.22
  4. Step 4: Simplify right side
    371,343.55x = 73,195,025,528.08
  5. Step 5: Solve for x
    x = 73,195,025,528.08/371,343.55
  6. Step 6: Final answer
    x = 197,108.65

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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.