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Finding the Fourth Proportional to 449,368.79, 620,103.56 and 245,379.11

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Solution

The fourth proportional to 449,368.79, 620,103.56 and 245,379.11 is: 338,609.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,368.79 : 620,103.56 = 245,379.11 : x
  2. Step 2: Convert to fraction form
    449,368.79/620,103.56 = 245,379.11/x
  3. Step 3: Cross multiply
    449,368.79x = 620,103.56 × 245,379.11
  4. Step 4: Simplify right side
    449,368.79x = 152,160,455,333.22
  5. Step 5: Solve for x
    x = 152,160,455,333.22/449,368.79
  6. Step 6: Final answer
    x = 338,609.31

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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.