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Finding the Fourth Proportional to 407,447.22, 611,279.53 and 141,207.51

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Solution

The fourth proportional to 407,447.22, 611,279.53 and 141,207.51 is: 211,848.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,447.22 : 611,279.53 = 141,207.51 : x
  2. Step 2: Convert to fraction form
    407,447.22/611,279.53 = 141,207.51/x
  3. Step 3: Cross multiply
    407,447.22x = 611,279.53 × 141,207.51
  4. Step 4: Simplify right side
    407,447.22x = 86,317,262,284.55
  5. Step 5: Solve for x
    x = 86,317,262,284.55/407,447.22
  6. Step 6: Final answer
    x = 211,848.94

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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.