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Finding the Fourth Proportional to 172,302.93, 257,805.18 and 154,821.51

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Solution

The fourth proportional to 172,302.93, 257,805.18 and 154,821.51 is: 231,648.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,302.93 : 257,805.18 = 154,821.51 : x
  2. Step 2: Convert to fraction form
    172,302.93/257,805.18 = 154,821.51/x
  3. Step 3: Cross multiply
    172,302.93x = 257,805.18 × 154,821.51
  4. Step 4: Simplify right side
    172,302.93x = 39,913,787,253.42
  5. Step 5: Solve for x
    x = 39,913,787,253.42/172,302.93
  6. Step 6: Final answer
    x = 231,648.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.