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Finding the Fourth Proportional to 297,000.40, 445,792.20 and 147,409.60

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Solution

The fourth proportional to 297,000.40, 445,792.20 and 147,409.60 is: 221,259.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,000.40 : 445,792.20 = 147,409.60 : x
  2. Step 2: Convert to fraction form
    297,000.40/445,792.20 = 147,409.60/x
  3. Step 3: Cross multiply
    297,000.40x = 445,792.20 × 147,409.60
  4. Step 4: Simplify right side
    297,000.40x = 65,714,049,885.12
  5. Step 5: Solve for x
    x = 65,714,049,885.12/297,000.40
  6. Step 6: Final answer
    x = 221,259.13

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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.