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Finding the Fourth Proportional to 308,310.86, 425,460.03 and 172,345.07

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Solution

The fourth proportional to 308,310.86, 425,460.03 and 172,345.07 is: 237,831.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,310.86 : 425,460.03 = 172,345.07 : x
  2. Step 2: Convert to fraction form
    308,310.86/425,460.03 = 172,345.07/x
  3. Step 3: Cross multiply
    308,310.86x = 425,460.03 × 172,345.07
  4. Step 4: Simplify right side
    308,310.86x = 73,325,936,525.25
  5. Step 5: Solve for x
    x = 73,325,936,525.25/308,310.86
  6. Step 6: Final answer
    x = 237,831.19

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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.