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Finding the Fourth Proportional to 356,961.09, 535,270.59 and 207,242.72

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Solution

The fourth proportional to 356,961.09, 535,270.59 and 207,242.72 is: 310,764.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,961.09 : 535,270.59 = 207,242.72 : x
  2. Step 2: Convert to fraction form
    356,961.09/535,270.59 = 207,242.72/x
  3. Step 3: Cross multiply
    356,961.09x = 535,270.59 × 207,242.72
  4. Step 4: Simplify right side
    356,961.09x = 110,930,930,331.25
  5. Step 5: Solve for x
    x = 110,930,930,331.25/356,961.09
  6. Step 6: Final answer
    x = 310,764.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.