Home / 352,290.72-528,429.12-86,043.36

Finding the Fourth Proportional to 352,290.72, 528,429.12 and 86,043.36

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Solution

The fourth proportional to 352,290.72, 528,429.12 and 86,043.36 is: 129,063.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,290.72 : 528,429.12 = 86,043.36 : x
  2. Step 2: Convert to fraction form
    352,290.72/528,429.12 = 86,043.36/x
  3. Step 3: Cross multiply
    352,290.72x = 528,429.12 × 86,043.36
  4. Step 4: Simplify right side
    352,290.72x = 45,467,817,006.64
  5. Step 5: Solve for x
    x = 45,467,817,006.64/352,290.72
  6. Step 6: Final answer
    x = 129,063.34

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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.