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Finding the Fourth Proportional to 281,000.20, 421,500.30 and 262,337.80

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Solution

The fourth proportional to 281,000.20, 421,500.30 and 262,337.80 is: 393,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,000.20 : 421,500.30 = 262,337.80 : x
  2. Step 2: Convert to fraction form
    281,000.20/421,500.30 = 262,337.80/x
  3. Step 3: Cross multiply
    281,000.20x = 421,500.30 × 262,337.80
  4. Step 4: Simplify right side
    281,000.20x = 110,575,461,401.34
  5. Step 5: Solve for x
    x = 110,575,461,401.34/281,000.20
  6. Step 6: Final answer
    x = 393,506.70

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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.