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Finding the Fourth Proportional to 611,192.85, 843,356.16 and 339,262.80

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Solution

The fourth proportional to 611,192.85, 843,356.16 and 339,262.80 is: 468,132.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,192.85 : 843,356.16 = 339,262.80 : x
  2. Step 2: Convert to fraction form
    611,192.85/843,356.16 = 339,262.80/x
  3. Step 3: Cross multiply
    611,192.85x = 843,356.16 × 339,262.80
  4. Step 4: Simplify right side
    611,192.85x = 286,119,372,238.85
  5. Step 5: Solve for x
    x = 286,119,372,238.85/611,192.85
  6. Step 6: Final answer
    x = 468,132.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.