Home / 315,742.37-435,730.74-172,511.29

Finding the Fourth Proportional to 315,742.37, 435,730.74 and 172,511.29

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Solution

The fourth proportional to 315,742.37, 435,730.74 and 172,511.29 is: 238,069.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,742.37 : 435,730.74 = 172,511.29 : x
  2. Step 2: Convert to fraction form
    315,742.37/435,730.74 = 172,511.29/x
  3. Step 3: Cross multiply
    315,742.37x = 435,730.74 × 172,511.29
  4. Step 4: Simplify right side
    315,742.37x = 75,168,469,871.40
  5. Step 5: Solve for x
    x = 75,168,469,871.40/315,742.37
  6. Step 6: Final answer
    x = 238,069.00

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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.