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Finding the Fourth Proportional to 400,048.40, 600,072.60 and 356,502.80

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Solution

The fourth proportional to 400,048.40, 600,072.60 and 356,502.80 is: 534,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,048.40 : 600,072.60 = 356,502.80 : x
  2. Step 2: Convert to fraction form
    400,048.40/600,072.60 = 356,502.80/x
  3. Step 3: Cross multiply
    400,048.40x = 600,072.60 × 356,502.80
  4. Step 4: Simplify right side
    400,048.40x = 213,927,562,103.28
  5. Step 5: Solve for x
    x = 213,927,562,103.28/400,048.40
  6. Step 6: Final answer
    x = 534,754.20

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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.