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Finding the Fourth Proportional to 482,872.48, 724,424.11 and 145,916.51

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Solution

The fourth proportional to 482,872.48, 724,424.11 and 145,916.51 is: 218,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,872.48 : 724,424.11 = 145,916.51 : x
  2. Step 2: Convert to fraction form
    482,872.48/724,424.11 = 145,916.51/x
  3. Step 3: Cross multiply
    482,872.48x = 724,424.11 × 145,916.51
  4. Step 4: Simplify right side
    482,872.48x = 105,705,433,904.14
  5. Step 5: Solve for x
    x = 105,705,433,904.14/482,872.48
  6. Step 6: Final answer
    x = 218,909.63

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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.