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Finding the Fourth Proportional to 355,997.80, 533,348.70 and 281,607.40

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Solution

The fourth proportional to 355,997.80, 533,348.70 and 281,607.40 is: 421,898.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,997.80 : 533,348.70 = 281,607.40 : x
  2. Step 2: Convert to fraction form
    355,997.80/533,348.70 = 281,607.40/x
  3. Step 3: Cross multiply
    355,997.80x = 533,348.70 × 281,607.40
  4. Step 4: Simplify right side
    355,997.80x = 150,194,940,700.38
  5. Step 5: Solve for x
    x = 150,194,940,700.38/355,997.80
  6. Step 6: Final answer
    x = 421,898.51

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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.