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Finding the Fourth Proportional to 347,145.80, 520,329.90 and 197,457.80

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Solution

The fourth proportional to 347,145.80, 520,329.90 and 197,457.80 is: 295,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,145.80 : 520,329.90 = 197,457.80 : x
  2. Step 2: Convert to fraction form
    347,145.80/520,329.90 = 197,457.80/x
  3. Step 3: Cross multiply
    347,145.80x = 520,329.90 × 197,457.80
  4. Step 4: Simplify right side
    347,145.80x = 102,743,197,328.22
  5. Step 5: Solve for x
    x = 102,743,197,328.22/347,145.80
  6. Step 6: Final answer
    x = 295,965.55

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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.