Home / 315,495.36-435,383.04-172,254.72

Finding the Fourth Proportional to 315,495.36, 435,383.04 and 172,254.72

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Solution

The fourth proportional to 315,495.36, 435,383.04 and 172,254.72 is: 237,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,495.36 : 435,383.04 = 172,254.72 : x
  2. Step 2: Convert to fraction form
    315,495.36/435,383.04 = 172,254.72/x
  3. Step 3: Cross multiply
    315,495.36x = 435,383.04 × 172,254.72
  4. Step 4: Simplify right side
    315,495.36x = 74,996,783,647.95
  5. Step 5: Solve for x
    x = 74,996,783,647.95/315,495.36
  6. Step 6: Final answer
    x = 237,711.21

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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.