Home / 315,927.94-435,979.53-172,688.02

Finding the Fourth Proportional to 315,927.94, 435,979.53 and 172,688.02

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Solution

The fourth proportional to 315,927.94, 435,979.53 and 172,688.02 is: 238,308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,927.94 : 435,979.53 = 172,688.02 : x
  2. Step 2: Convert to fraction form
    315,927.94/435,979.53 = 172,688.02/x
  3. Step 3: Cross multiply
    315,927.94x = 435,979.53 × 172,688.02
  4. Step 4: Simplify right side
    315,927.94x = 75,288,441,796.23
  5. Step 5: Solve for x
    x = 75,288,441,796.23/315,927.94
  6. Step 6: Final answer
    x = 238,308.91

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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.