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Finding the Fourth Proportional to 352,373.82, 528,556.13 and 86,136.67

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Solution

The fourth proportional to 352,373.82, 528,556.13 and 86,136.67 is: 129,203.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,373.82 : 528,556.13 = 86,136.67 : x
  2. Step 2: Convert to fraction form
    352,373.82/528,556.13 = 86,136.67/x
  3. Step 3: Cross multiply
    352,373.82x = 528,556.13 × 86,136.67
  4. Step 4: Simplify right side
    352,373.82x = 45,528,064,946.29
  5. Step 5: Solve for x
    x = 45,528,064,946.29/352,373.82
  6. Step 6: Final answer
    x = 129,203.88

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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.