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Finding the Fourth Proportional to 219,551,788.21, 302,978,609.01 and 125,464,864.63

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Solution

The fourth proportional to 219,551,788.21, 302,978,609.01 and 125,464,864.63 is: 173,139,879.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,551,788.21 : 302,978,609.01 = 125,464,864.63 : x
  2. Step 2: Convert to fraction form
    219,551,788.21/302,978,609.01 = 125,464,864.63/x
  3. Step 3: Cross multiply
    219,551,788.21x = 302,978,609.01 × 125,464,864.63
  4. Step 4: Simplify right side
    219,551,788.21x = 38,013,170,165,225,344
  5. Step 5: Solve for x
    x = 38,013,170,165,225,344/219,551,788.21
  6. Step 6: Final answer
    x = 173,139,879.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.