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Finding the Fourth Proportional to 346,489.84, 478,163.82 and 203,353.12

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Solution

The fourth proportional to 346,489.84, 478,163.82 and 203,353.12 is: 280,631.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,489.84 : 478,163.82 = 203,353.12 : x
  2. Step 2: Convert to fraction form
    346,489.84/478,163.82 = 203,353.12/x
  3. Step 3: Cross multiply
    346,489.84x = 478,163.82 × 203,353.12
  4. Step 4: Simplify right side
    346,489.84x = 97,236,104,668.12
  5. Step 5: Solve for x
    x = 97,236,104,668.12/346,489.84
  6. Step 6: Final answer
    x = 280,631.91

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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.