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Finding the Fourth Proportional to 306,942.84, 423,483.66 and 172,780.92

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Solution

The fourth proportional to 306,942.84, 423,483.66 and 172,780.92 is: 238,382.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,942.84 : 423,483.66 = 172,780.92 : x
  2. Step 2: Convert to fraction form
    306,942.84/423,483.66 = 172,780.92/x
  3. Step 3: Cross multiply
    306,942.84x = 423,483.66 × 172,780.92
  4. Step 4: Simplify right side
    306,942.84x = 73,169,896,379.77
  5. Step 5: Solve for x
    x = 73,169,896,379.77/306,942.84
  6. Step 6: Final answer
    x = 238,382.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.