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Finding the Fourth Proportional to 479,762.97, 719,518.86 and 142,712.88

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Solution

The fourth proportional to 479,762.97, 719,518.86 and 142,712.88 is: 214,031.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,762.97 : 719,518.86 = 142,712.88 : x
  2. Step 2: Convert to fraction form
    479,762.97/719,518.86 = 142,712.88/x
  3. Step 3: Cross multiply
    479,762.97x = 719,518.86 × 142,712.88
  4. Step 4: Simplify right side
    479,762.97x = 102,684,608,724.92
  5. Step 5: Solve for x
    x = 102,684,608,724.92/479,762.97
  6. Step 6: Final answer
    x = 214,031.96

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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.