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Finding the Fourth Proportional to 479,225.09, 718,714.62 and 142,186.01

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Solution

The fourth proportional to 479,225.09, 718,714.62 and 142,186.01 is: 213,242.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,225.09 : 718,714.62 = 142,186.01 : x
  2. Step 2: Convert to fraction form
    479,225.09/718,714.62 = 142,186.01/x
  3. Step 3: Cross multiply
    479,225.09x = 718,714.62 × 142,186.01
  4. Step 4: Simplify right side
    479,225.09x = 102,191,164,146.47
  5. Step 5: Solve for x
    x = 102,191,164,146.47/479,225.09
  6. Step 6: Final answer
    x = 213,242.52

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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.