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Finding the Fourth Proportional to 308,223.73, 425,345.43 and 170,402.07

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Solution

The fourth proportional to 308,223.73, 425,345.43 and 170,402.07 is: 235,153.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,223.73 : 425,345.43 = 170,402.07 : x
  2. Step 2: Convert to fraction form
    308,223.73/425,345.43 = 170,402.07/x
  3. Step 3: Cross multiply
    308,223.73x = 425,345.43 × 170,402.07
  4. Step 4: Simplify right side
    308,223.73x = 72,479,740,021.87
  5. Step 5: Solve for x
    x = 72,479,740,021.87/308,223.73
  6. Step 6: Final answer
    x = 235,153.02

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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.