Home / 315,353.32-435,188.76-172,116.52

Finding the Fourth Proportional to 315,353.32, 435,188.76 and 172,116.52

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Solution

The fourth proportional to 315,353.32, 435,188.76 and 172,116.52 is: 237,521.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,353.32 : 435,188.76 = 172,116.52 : x
  2. Step 2: Convert to fraction form
    315,353.32/435,188.76 = 172,116.52/x
  3. Step 3: Cross multiply
    315,353.32x = 435,188.76 × 172,116.52
  4. Step 4: Simplify right side
    315,353.32x = 74,903,174,914.32
  5. Step 5: Solve for x
    x = 74,903,174,914.32/315,353.32
  6. Step 6: Final answer
    x = 237,521.44

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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.