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Finding the Fourth Proportional to 449,634.78, 620,488.49 and 245,681.24

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Solution

The fourth proportional to 449,634.78, 620,488.49 and 245,681.24 is: 339,036.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,634.78 : 620,488.49 = 245,681.24 : x
  2. Step 2: Convert to fraction form
    449,634.78/620,488.49 = 245,681.24/x
  3. Step 3: Cross multiply
    449,634.78x = 620,488.49 × 245,681.24
  4. Step 4: Simplify right side
    449,634.78x = 152,442,377,298.08
  5. Step 5: Solve for x
    x = 152,442,377,298.08/449,634.78
  6. Step 6: Final answer
    x = 339,036.00

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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.