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Finding the Fourth Proportional to 445,504.32, 668,187.36 and 129,928.32

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Solution

The fourth proportional to 445,504.32, 668,187.36 and 129,928.32 is: 194,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,504.32 : 668,187.36 = 129,928.32 : x
  2. Step 2: Convert to fraction form
    445,504.32/668,187.36 = 129,928.32/x
  3. Step 3: Cross multiply
    445,504.32x = 668,187.36 × 129,928.32
  4. Step 4: Simplify right side
    445,504.32x = 86,816,461,130.04
  5. Step 5: Solve for x
    x = 86,816,461,130.04/445,504.32
  6. Step 6: Final answer
    x = 194,872.32

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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.