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Finding the Fourth Proportional to 345,457.85, 476,688.85 and 200,262.92

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Solution

The fourth proportional to 345,457.85, 476,688.85 and 200,262.92 is: 276,337.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,457.85 : 476,688.85 = 200,262.92 : x
  2. Step 2: Convert to fraction form
    345,457.85/476,688.85 = 200,262.92/x
  3. Step 3: Cross multiply
    345,457.85x = 476,688.85 × 200,262.92
  4. Step 4: Simplify right side
    345,457.85x = 95,463,098,148.34
  5. Step 5: Solve for x
    x = 95,463,098,148.34/345,457.85
  6. Step 6: Final answer
    x = 276,337.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.