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Finding the Fourth Proportional to 315,636.99, 435,579.06 and 172,397.37

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Solution

The fourth proportional to 315,636.99, 435,579.06 and 172,397.37 is: 237,908.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,636.99 : 435,579.06 = 172,397.37 : x
  2. Step 2: Convert to fraction form
    315,636.99/435,579.06 = 172,397.37/x
  3. Step 3: Cross multiply
    315,636.99x = 435,579.06 × 172,397.37
  4. Step 4: Simplify right side
    315,636.99x = 75,092,684,371.07
  5. Step 5: Solve for x
    x = 75,092,684,371.07/315,636.99
  6. Step 6: Final answer
    x = 237,908.38

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1.5x scale

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.