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Finding the Fourth Proportional to 388,296.56, 536,014.58 and 261,045.96

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Solution

The fourth proportional to 388,296.56, 536,014.58 and 261,045.96 is: 360,354.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,296.56 : 536,014.58 = 261,045.96 : x
  2. Step 2: Convert to fraction form
    388,296.56/536,014.58 = 261,045.96/x
  3. Step 3: Cross multiply
    388,296.56x = 536,014.58 × 261,045.96
  4. Step 4: Simplify right side
    388,296.56x = 139,924,440,610.10
  5. Step 5: Solve for x
    x = 139,924,440,610.10/388,296.56
  6. Step 6: Final answer
    x = 360,354.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.