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Finding the Fourth Proportional to 355,339.40, 533,009.10 and 331,838.60

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Solution

The fourth proportional to 355,339.40, 533,009.10 and 331,838.60 is: 497,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,339.40 : 533,009.10 = 331,838.60 : x
  2. Step 2: Convert to fraction form
    355,339.40/533,009.10 = 331,838.60/x
  3. Step 3: Cross multiply
    355,339.40x = 533,009.10 × 331,838.60
  4. Step 4: Simplify right side
    355,339.40x = 176,872,993,531.26
  5. Step 5: Solve for x
    x = 176,872,993,531.26/355,339.40
  6. Step 6: Final answer
    x = 497,757.90

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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.