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Finding the Fourth Proportional to 479,261.60, 718,994.46 and 142,303.22

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Solution

The fourth proportional to 479,261.60, 718,994.46 and 142,303.22 is: 213,485.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,261.60 : 718,994.46 = 142,303.22 : x
  2. Step 2: Convert to fraction form
    479,261.60/718,994.46 = 142,303.22/x
  3. Step 3: Cross multiply
    479,261.60x = 718,994.46 × 142,303.22
  4. Step 4: Simplify right side
    479,261.60x = 102,315,226,820.16
  5. Step 5: Solve for x
    x = 102,315,226,820.16/479,261.60
  6. Step 6: Final answer
    x = 213,485.13

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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.