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Finding the Fourth Proportional to 315,325.25, 435,158.07 and 172,094.48

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Solution

The fourth proportional to 315,325.25, 435,158.07 and 172,094.48 is: 237,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,325.25 : 435,158.07 = 172,094.48 : x
  2. Step 2: Convert to fraction form
    315,325.25/435,158.07 = 172,094.48/x
  3. Step 3: Cross multiply
    315,325.25x = 435,158.07 × 172,094.48
  4. Step 4: Simplify right side
    315,325.25x = 74,888,301,774.45
  5. Step 5: Solve for x
    x = 74,888,301,774.45/315,325.25
  6. Step 6: Final answer
    x = 237,495.42

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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.