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Finding the Fourth Proportional to 445,367.70, 668,051.55 and 129,834.90

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Solution

The fourth proportional to 445,367.70, 668,051.55 and 129,834.90 is: 194,752.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,367.70 : 668,051.55 = 129,834.90 : x
  2. Step 2: Convert to fraction form
    445,367.70/668,051.55 = 129,834.90/x
  3. Step 3: Cross multiply
    445,367.70x = 668,051.55 × 129,834.90
  4. Step 4: Simplify right side
    445,367.70x = 86,736,406,189.10
  5. Step 5: Solve for x
    x = 86,736,406,189.10/445,367.70
  6. Step 6: Final answer
    x = 194,752.35

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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.