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Finding the Third Proportional to 154,080 and 216,342

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Solution

The third proportional to 154,080 and 216,342 is: 303,763.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,080 : 216,342 = 216,342 : x
  2. Step 2: Convert to fraction form
    154,080/216,342 = 216,342/x
  3. Step 3: Cross multiply
    154,080x = 216,342 × 216,342
  4. Step 4: Simplify right side
    154,080x = 46,803,860,964
  5. Step 5: Solve for x
    x = 46,803,860,964/154,080
  6. Step 6: Final answer
    x = 303,763.38

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.