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Finding the Fourth Proportional to 302,635.40, 417,815.70 and 269,004.20

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Solution

The fourth proportional to 302,635.40, 417,815.70 and 269,004.20 is: 371,384.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,635.40 : 417,815.70 = 269,004.20 : x
  2. Step 2: Convert to fraction form
    302,635.40/417,815.70 = 269,004.20/x
  3. Step 3: Cross multiply
    302,635.40x = 417,815.70 × 269,004.20
  4. Step 4: Simplify right side
    302,635.40x = 112,394,178,125.94
  5. Step 5: Solve for x
    x = 112,394,178,125.94/302,635.40
  6. Step 6: Final answer
    x = 371,384.77

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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.