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Finding the Fourth Proportional to 445,507.99, 668,250.96 and 129,967.63

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Solution

The fourth proportional to 445,507.99, 668,250.96 and 129,967.63 is: 194,948.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,507.99 : 668,250.96 = 129,967.63 : x
  2. Step 2: Convert to fraction form
    445,507.99/668,250.96 = 129,967.63/x
  3. Step 3: Cross multiply
    445,507.99x = 668,250.96 × 129,967.63
  4. Step 4: Simplify right side
    445,507.99x = 86,850,993,516.42
  5. Step 5: Solve for x
    x = 86,850,993,516.42/445,507.99
  6. Step 6: Final answer
    x = 194,948.23

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1.5x scale

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.