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Finding the Third Proportional to 279,490.50 and 435,840.75

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Solution

The third proportional to 279,490.50 and 435,840.75 is: 679,655.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,490.50 : 435,840.75 = 435,840.75 : x
  2. Step 2: Convert to fraction form
    279,490.50/435,840.75 = 435,840.75/x
  3. Step 3: Cross multiply
    279,490.50x = 435,840.75 × 435,840.75
  4. Step 4: Simplify right side
    279,490.50x = 189,957,159,360.56
  5. Step 5: Solve for x
    x = 189,957,159,360.56/279,490.50
  6. Step 6: Final answer
    x = 679,655.16

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.