Home / 208,397.36-312,587.30-88,421.38

Finding the Fourth Proportional to 208,397.36, 312,587.30 and 88,421.38

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Solution

The fourth proportional to 208,397.36, 312,587.30 and 88,421.38 is: 132,628.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,397.36 : 312,587.30 = 88,421.38 : x
  2. Step 2: Convert to fraction form
    208,397.36/312,587.30 = 88,421.38/x
  3. Step 3: Cross multiply
    208,397.36x = 312,587.30 × 88,421.38
  4. Step 4: Simplify right side
    208,397.36x = 27,639,400,436.47
  5. Step 5: Solve for x
    x = 27,639,400,436.47/208,397.36
  6. Step 6: Final answer
    x = 132,628.36

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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.