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Finding the Fourth Proportional to 479,534.45, 719,301.47 and 142,573.64

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Solution

The fourth proportional to 479,534.45, 719,301.47 and 142,573.64 is: 213,860.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,534.45 : 719,301.47 = 142,573.64 : x
  2. Step 2: Convert to fraction form
    479,534.45/719,301.47 = 142,573.64/x
  3. Step 3: Cross multiply
    479,534.45x = 719,301.47 × 142,573.64
  4. Step 4: Simplify right side
    479,534.45x = 102,553,424,525.88
  5. Step 5: Solve for x
    x = 102,553,424,525.88/479,534.45
  6. Step 6: Final answer
    x = 213,860.39

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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.