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Finding the Third Proportional to 266,011.50 and 391,240.50

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Solution

The third proportional to 266,011.50 and 391,240.50 is: 575,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,011.50 : 391,240.50 = 391,240.50 : x
  2. Step 2: Convert to fraction form
    266,011.50/391,240.50 = 391,240.50/x
  3. Step 3: Cross multiply
    266,011.50x = 391,240.50 × 391,240.50
  4. Step 4: Simplify right side
    266,011.50x = 153,069,128,840.25
  5. Step 5: Solve for x
    x = 153,069,128,840.25/266,011.50
  6. Step 6: Final answer
    x = 575,422.98

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.