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Finding the Fourth Proportional to 445,792.60, 669,126.30 and 221,406.40

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Solution

The fourth proportional to 445,792.60, 669,126.30 and 221,406.40 is: 332,326.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,792.60 : 669,126.30 = 221,406.40 : x
  2. Step 2: Convert to fraction form
    445,792.60/669,126.30 = 221,406.40/x
  3. Step 3: Cross multiply
    445,792.60x = 669,126.30 × 221,406.40
  4. Step 4: Simplify right side
    445,792.60x = 148,148,845,228.32
  5. Step 5: Solve for x
    x = 148,148,845,228.32/445,792.60
  6. Step 6: Final answer
    x = 332,326.84

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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.