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Finding the Fourth Proportional to 482,396.87, 723,699.79 and 145,409.33

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Solution

The fourth proportional to 482,396.87, 723,699.79 and 145,409.33 is: 218,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,396.87 : 723,699.79 = 145,409.33 : x
  2. Step 2: Convert to fraction form
    482,396.87/723,699.79 = 145,409.33/x
  3. Step 3: Cross multiply
    482,396.87x = 723,699.79 × 145,409.33
  4. Step 4: Simplify right side
    482,396.87x = 105,232,703,030.77
  5. Step 5: Solve for x
    x = 105,232,703,030.77/482,396.87
  6. Step 6: Final answer
    x = 218,145.49

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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.