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Finding the Fourth Proportional to 425,736.84, 638,691.66 and 159,492.36

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Solution

The fourth proportional to 425,736.84, 638,691.66 and 159,492.36 is: 239,270.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,736.84 : 638,691.66 = 159,492.36 : x
  2. Step 2: Convert to fraction form
    425,736.84/638,691.66 = 159,492.36/x
  3. Step 3: Cross multiply
    425,736.84x = 638,691.66 × 159,492.36
  4. Step 4: Simplify right side
    425,736.84x = 101,866,440,165.72
  5. Step 5: Solve for x
    x = 101,866,440,165.72/425,736.84
  6. Step 6: Final answer
    x = 239,270.91

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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.