Home / 400,990.30-553,366.45-239,883.19

Finding the Fourth Proportional to 400,990.30, 553,366.45 and 239,883.19

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Solution

The fourth proportional to 400,990.30, 553,366.45 and 239,883.19 is: 331,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,990.30 : 553,366.45 = 239,883.19 : x
  2. Step 2: Convert to fraction form
    400,990.30/553,366.45 = 239,883.19/x
  3. Step 3: Cross multiply
    400,990.30x = 553,366.45 × 239,883.19
  4. Step 4: Simplify right side
    400,990.30x = 132,743,308,181.41
  5. Step 5: Solve for x
    x = 132,743,308,181.41/400,990.30
  6. Step 6: Final answer
    x = 331,038.70

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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.