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Finding the Fourth Proportional to 479,275.60, 719,015.46 and 142,317.22

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Solution

The fourth proportional to 479,275.60, 719,015.46 and 142,317.22 is: 213,506.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,275.60 : 719,015.46 = 142,317.22 : x
  2. Step 2: Convert to fraction form
    479,275.60/719,015.46 = 142,317.22/x
  3. Step 3: Cross multiply
    479,275.60x = 719,015.46 × 142,317.22
  4. Step 4: Simplify right side
    479,275.60x = 102,328,281,404.22
  5. Step 5: Solve for x
    x = 102,328,281,404.22/479,275.60
  6. Step 6: Final answer
    x = 213,506.14

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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.