Home / 219,167,406.40-328,751,109.60-137,538,068.80

Finding the Fourth Proportional to 219,167,406.40, 328,751,109.60 and 137,538,068.80

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Solution

The fourth proportional to 219,167,406.40, 328,751,109.60 and 137,538,068.80 is: 206,307,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,167,406.40 : 328,751,109.60 = 137,538,068.80 : x
  2. Step 2: Convert to fraction form
    219,167,406.40/328,751,109.60 = 137,538,068.80/x
  3. Step 3: Cross multiply
    219,167,406.40x = 328,751,109.60 × 137,538,068.80
  4. Step 4: Simplify right side
    219,167,406.40x = 45,215,792,730,241,144
  5. Step 5: Solve for x
    x = 45,215,792,730,241,144/219,167,406.40
  6. Step 6: Final answer
    x = 206,307,103.20

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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.