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Finding the Fourth Proportional to 479,706.76, 719,434.68 and 142,656.58

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Solution

The fourth proportional to 479,706.76, 719,434.68 and 142,656.58 is: 213,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,706.76 : 719,434.68 = 142,656.58 : x
  2. Step 2: Convert to fraction form
    479,706.76/719,434.68 = 142,656.58/x
  3. Step 3: Cross multiply
    479,706.76x = 719,434.68 × 142,656.58
  4. Step 4: Simplify right side
    479,706.76x = 102,632,090,982.19
  5. Step 5: Solve for x
    x = 102,632,090,982.19/479,706.76
  6. Step 6: Final answer
    x = 213,947.56

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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.