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Finding the Fourth Proportional to 308,095.16, 425,163.48 and 172,130.13

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Solution

The fourth proportional to 308,095.16, 425,163.48 and 172,130.13 is: 237,535.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,095.16 : 425,163.48 = 172,130.13 : x
  2. Step 2: Convert to fraction form
    308,095.16/425,163.48 = 172,130.13/x
  3. Step 3: Cross multiply
    308,095.16x = 425,163.48 × 172,130.13
  4. Step 4: Simplify right side
    308,095.16x = 73,183,444,134.78
  5. Step 5: Solve for x
    x = 73,183,444,134.78/308,095.16
  6. Step 6: Final answer
    x = 237,535.20

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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.