Home / 400,339.56-551,833.38-315,321.96

Finding the Fourth Proportional to 400,339.56, 551,833.38 and 315,321.96

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Solution

The fourth proportional to 400,339.56, 551,833.38 and 315,321.96 is: 434,643.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,339.56 : 551,833.38 = 315,321.96 : x
  2. Step 2: Convert to fraction form
    400,339.56/551,833.38 = 315,321.96/x
  3. Step 3: Cross multiply
    400,339.56x = 551,833.38 × 315,321.96
  4. Step 4: Simplify right side
    400,339.56x = 174,005,182,975.03
  5. Step 5: Solve for x
    x = 174,005,182,975.03/400,339.56
  6. Step 6: Final answer
    x = 434,643.99

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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.