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Finding the Fourth Proportional to 347,813.70, 521,720.55 and 170,666.70

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Solution

The fourth proportional to 347,813.70, 521,720.55 and 170,666.70 is: 256,000.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,813.70 : 521,720.55 = 170,666.70 : x
  2. Step 2: Convert to fraction form
    347,813.70/521,720.55 = 170,666.70/x
  3. Step 3: Cross multiply
    347,813.70x = 521,720.55 × 170,666.70
  4. Step 4: Simplify right side
    347,813.70x = 89,040,324,590.69
  5. Step 5: Solve for x
    x = 89,040,324,590.69/347,813.70
  6. Step 6: Final answer
    x = 256,000.05

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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.