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Finding the Fourth Proportional to 219,459.90, 302,873.31 and 123,984.12

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Solution

The fourth proportional to 219,459.90, 302,873.31 and 123,984.12 is: 171,108.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,459.90 : 302,873.31 = 123,984.12 : x
  2. Step 2: Convert to fraction form
    219,459.90/302,873.31 = 123,984.12/x
  3. Step 3: Cross multiply
    219,459.90x = 302,873.31 × 123,984.12
  4. Step 4: Simplify right side
    219,459.90x = 37,551,480,811.84
  5. Step 5: Solve for x
    x = 37,551,480,811.84/219,459.90
  6. Step 6: Final answer
    x = 171,108.62

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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.