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Finding the Third Proportional to 153,811.50 and 240,798

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Solution

The third proportional to 153,811.50 and 240,798 is: 376,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,811.50 : 240,798 = 240,798 : x
  2. Step 2: Convert to fraction form
    153,811.50/240,798 = 240,798/x
  3. Step 3: Cross multiply
    153,811.50x = 240,798 × 240,798
  4. Step 4: Simplify right side
    153,811.50x = 57,983,676,804
  5. Step 5: Solve for x
    x = 57,983,676,804/153,811.50
  6. Step 6: Final answer
    x = 376,978.81

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.