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Finding the Fourth Proportional to 385,310.40, 577,576.80 and 175,099.20

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Solution

The fourth proportional to 385,310.40, 577,576.80 and 175,099.20 is: 262,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,310.40 : 577,576.80 = 175,099.20 : x
  2. Step 2: Convert to fraction form
    385,310.40/577,576.80 = 175,099.20/x
  3. Step 3: Cross multiply
    385,310.40x = 577,576.80 × 175,099.20
  4. Step 4: Simplify right side
    385,310.40x = 101,133,235,618.56
  5. Step 5: Solve for x
    x = 101,133,235,618.56/385,310.40
  6. Step 6: Final answer
    x = 262,472.11

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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.