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Finding the Fourth Proportional to 308,244.84, 425,369.88 and 172,279.92

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Solution

The fourth proportional to 308,244.84, 425,369.88 and 172,279.92 is: 237,741.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,244.84 : 425,369.88 = 172,279.92 : x
  2. Step 2: Convert to fraction form
    308,244.84/425,369.88 = 172,279.92/x
  3. Step 3: Cross multiply
    308,244.84x = 425,369.88 × 172,279.92
  4. Step 4: Simplify right side
    308,244.84x = 73,282,688,896.81
  5. Step 5: Solve for x
    x = 73,282,688,896.81/308,244.84
  6. Step 6: Final answer
    x = 237,741.82

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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.