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Finding the Fourth Proportional to 219,326.30, 328,989.45 and 101,228.30

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Solution

The fourth proportional to 219,326.30, 328,989.45 and 101,228.30 is: 151,842.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,326.30 : 328,989.45 = 101,228.30 : x
  2. Step 2: Convert to fraction form
    219,326.30/328,989.45 = 101,228.30/x
  3. Step 3: Cross multiply
    219,326.30x = 328,989.45 × 101,228.30
  4. Step 4: Simplify right side
    219,326.30x = 33,303,042,741.44
  5. Step 5: Solve for x
    x = 33,303,042,741.44/219,326.30
  6. Step 6: Final answer
    x = 151,842.45

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1.5x scale

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.