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Finding the Fourth Proportional to 449,740.34, 674,410.06 and 129,816.15

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Solution

The fourth proportional to 449,740.34, 674,410.06 and 129,816.15 is: 194,666.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,740.34 : 674,410.06 = 129,816.15 : x
  2. Step 2: Convert to fraction form
    449,740.34/674,410.06 = 129,816.15/x
  3. Step 3: Cross multiply
    449,740.34x = 674,410.06 × 129,816.15
  4. Step 4: Simplify right side
    449,740.34x = 87,549,317,818.19
  5. Step 5: Solve for x
    x = 87,549,317,818.19/449,740.34
  6. Step 6: Final answer
    x = 194,666.37

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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.