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Finding the Fourth Proportional to 449,697.40, 620,590.56 and 245,756.95

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Solution

The fourth proportional to 449,697.40, 620,590.56 and 245,756.95 is: 339,149.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,697.40 : 620,590.56 = 245,756.95 : x
  2. Step 2: Convert to fraction form
    449,697.40/620,590.56 = 245,756.95/x
  3. Step 3: Cross multiply
    449,697.40x = 620,590.56 × 245,756.95
  4. Step 4: Simplify right side
    449,697.40x = 152,514,443,224.39
  5. Step 5: Solve for x
    x = 152,514,443,224.39/449,697.40
  6. Step 6: Final answer
    x = 339,149.04

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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.