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Finding the Fourth Proportional to 611,095.88, 843,321.48 and 339,181.40

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Solution

The fourth proportional to 611,095.88, 843,321.48 and 339,181.40 is: 468,075.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,095.88 : 843,321.48 = 339,181.40 : x
  2. Step 2: Convert to fraction form
    611,095.88/843,321.48 = 339,181.40/x
  3. Step 3: Cross multiply
    611,095.88x = 843,321.48 × 339,181.40
  4. Step 4: Simplify right side
    611,095.88x = 286,038,960,236.47
  5. Step 5: Solve for x
    x = 286,038,960,236.47/611,095.88
  6. Step 6: Final answer
    x = 468,075.42

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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.