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Finding the Fourth Proportional to 534,420.70, 800,950.65 and 218,520.70

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Solution

The fourth proportional to 534,420.70, 800,950.65 and 218,520.70 is: 327,502.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,420.70 : 800,950.65 = 218,520.70 : x
  2. Step 2: Convert to fraction form
    534,420.70/800,950.65 = 218,520.70/x
  3. Step 3: Cross multiply
    534,420.70x = 800,950.65 × 218,520.70
  4. Step 4: Simplify right side
    534,420.70x = 175,024,296,703.46
  5. Step 5: Solve for x
    x = 175,024,296,703.46/534,420.70
  6. Step 6: Final answer
    x = 327,502.84

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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.