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Finding the Fourth Proportional to 308,624, 425,903.68 and 167,312

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Solution

The fourth proportional to 308,624, 425,903.68 and 167,312 is: 230,891.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,624 : 425,903.68 = 167,312 : x
  2. Step 2: Convert to fraction form
    308,624/425,903.68 = 167,312/x
  3. Step 3: Cross multiply
    308,624x = 425,903.68 × 167,312
  4. Step 4: Simplify right side
    308,624x = 71,258,796,508.16
  5. Step 5: Solve for x
    x = 71,258,796,508.16/308,624
  6. Step 6: Final answer
    x = 230,891.95

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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.