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Finding the Fourth Proportional to 315,754.46, 435,718.41 and 172,484.09

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Solution

The fourth proportional to 315,754.46, 435,718.41 and 172,484.09 is: 238,015.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,754.46 : 435,718.41 = 172,484.09 : x
  2. Step 2: Convert to fraction form
    315,754.46/435,718.41 = 172,484.09/x
  3. Step 3: Cross multiply
    315,754.46x = 435,718.41 × 172,484.09
  4. Step 4: Simplify right side
    315,754.46x = 75,154,493,445.10
  5. Step 5: Solve for x
    x = 75,154,493,445.10/315,754.46
  6. Step 6: Final answer
    x = 238,015.62

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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.