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Finding the Fourth Proportional to 219,871.40, 329,612.70 and 131,030.60

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Solution

The fourth proportional to 219,871.40, 329,612.70 and 131,030.60 is: 196,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,871.40 : 329,612.70 = 131,030.60 : x
  2. Step 2: Convert to fraction form
    219,871.40/329,612.70 = 131,030.60/x
  3. Step 3: Cross multiply
    219,871.40x = 329,612.70 × 131,030.60
  4. Step 4: Simplify right side
    219,871.40x = 43,189,349,848.62
  5. Step 5: Solve for x
    x = 43,189,349,848.62/219,871.40
  6. Step 6: Final answer
    x = 196,430.05

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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.