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Finding the Fourth Proportional to 220,435.20, 330,652.80 and 141,703.20

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Solution

The fourth proportional to 220,435.20, 330,652.80 and 141,703.20 is: 212,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,435.20 : 330,652.80 = 141,703.20 : x
  2. Step 2: Convert to fraction form
    220,435.20/330,652.80 = 141,703.20/x
  3. Step 3: Cross multiply
    220,435.20x = 330,652.80 × 141,703.20
  4. Step 4: Simplify right side
    220,435.20x = 46,854,559,848.96
  5. Step 5: Solve for x
    x = 46,854,559,848.96/220,435.20
  6. Step 6: Final answer
    x = 212,554.80

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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.