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Finding the Third Proportional to 153,388 and 358,556

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Solution

The third proportional to 153,388 and 358,556 is: 838,151.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,388 : 358,556 = 358,556 : x
  2. Step 2: Convert to fraction form
    153,388/358,556 = 358,556/x
  3. Step 3: Cross multiply
    153,388x = 358,556 × 358,556
  4. Step 4: Simplify right side
    153,388x = 128,562,405,136
  5. Step 5: Solve for x
    x = 128,562,405,136/153,388
  6. Step 6: Final answer
    x = 838,151.65

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.