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Finding the Fourth Proportional to 356,703.89, 535,589.54 and 308,820.59

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Solution

The fourth proportional to 356,703.89, 535,589.54 and 308,820.59 is: 463,692.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,703.89 : 535,589.54 = 308,820.59 : x
  2. Step 2: Convert to fraction form
    356,703.89/535,589.54 = 308,820.59/x
  3. Step 3: Cross multiply
    356,703.89x = 535,589.54 × 308,820.59
  4. Step 4: Simplify right side
    356,703.89x = 165,401,076,800.50
  5. Step 5: Solve for x
    x = 165,401,076,800.50/356,703.89
  6. Step 6: Final answer
    x = 463,692.94

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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.