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Finding the Fourth Proportional to 479,684.03, 719,460.50 and 142,776.68

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Solution

The fourth proportional to 479,684.03, 719,460.50 and 142,776.68 is: 214,145.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,684.03 : 719,460.50 = 142,776.68 : x
  2. Step 2: Convert to fraction form
    479,684.03/719,460.50 = 142,776.68/x
  3. Step 3: Cross multiply
    479,684.03x = 719,460.50 × 142,776.68
  4. Step 4: Simplify right side
    479,684.03x = 102,722,177,269.95
  5. Step 5: Solve for x
    x = 102,722,177,269.95/479,684.03
  6. Step 6: Final answer
    x = 214,145.50

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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.