Home / 228,788.36-342,979.50-86,534.12

Finding the Fourth Proportional to 228,788.36, 342,979.50 and 86,534.12

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Solution

The fourth proportional to 228,788.36, 342,979.50 and 86,534.12 is: 129,724.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,788.36 : 342,979.50 = 86,534.12 : x
  2. Step 2: Convert to fraction form
    228,788.36/342,979.50 = 86,534.12/x
  3. Step 3: Cross multiply
    228,788.36x = 342,979.50 × 86,534.12
  4. Step 4: Simplify right side
    228,788.36x = 29,679,429,210.54
  5. Step 5: Solve for x
    x = 29,679,429,210.54/228,788.36
  6. Step 6: Final answer
    x = 129,724.38

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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.