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Finding the Fourth Proportional to 347,145.30, 520,329.15 and 197,457.30

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Solution

The fourth proportional to 347,145.30, 520,329.15 and 197,457.30 is: 295,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,145.30 : 520,329.15 = 197,457.30 : x
  2. Step 2: Convert to fraction form
    347,145.30/520,329.15 = 197,457.30/x
  3. Step 3: Cross multiply
    347,145.30x = 520,329.15 × 197,457.30
  4. Step 4: Simplify right side
    347,145.30x = 102,742,789,070.30
  5. Step 5: Solve for x
    x = 102,742,789,070.30/347,145.30
  6. Step 6: Final answer
    x = 295,964.80

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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.