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Finding the Fourth Proportional to 449,697.65, 620,590.91 and 245,757.20

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Solution

The fourth proportional to 449,697.65, 620,590.91 and 245,757.20 is: 339,149.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,697.65 : 620,590.91 = 245,757.20 : x
  2. Step 2: Convert to fraction form
    449,697.65/620,590.91 = 245,757.20/x
  3. Step 3: Cross multiply
    449,697.65x = 620,590.91 × 245,757.20
  4. Step 4: Simplify right side
    449,697.65x = 152,514,680,055.31
  5. Step 5: Solve for x
    x = 152,514,680,055.31/449,697.65
  6. Step 6: Final answer
    x = 339,149.39

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1.5x scale

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.