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Finding the Fourth Proportional to 402,450.20, 604,841.70 and 351,128.60

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Solution

The fourth proportional to 402,450.20, 604,841.70 and 351,128.60 is: 527,710.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,450.20 : 604,841.70 = 351,128.60 : x
  2. Step 2: Convert to fraction form
    402,450.20/604,841.70 = 351,128.60/x
  3. Step 3: Cross multiply
    402,450.20x = 604,841.70 × 351,128.60
  4. Step 4: Simplify right side
    402,450.20x = 212,377,219,342.62
  5. Step 5: Solve for x
    x = 212,377,219,342.62/402,450.20
  6. Step 6: Final answer
    x = 527,710.56

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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.