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Finding the Fourth Proportional to 611,166.60, 843,396.84 and 339,218.64

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Solution

The fourth proportional to 611,166.60, 843,396.84 and 339,218.64 is: 468,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,166.60 : 843,396.84 = 339,218.64 : x
  2. Step 2: Convert to fraction form
    611,166.60/843,396.84 = 339,218.64/x
  3. Step 3: Cross multiply
    611,166.60x = 843,396.84 × 339,218.64
  4. Step 4: Simplify right side
    611,166.60x = 286,095,929,045.10
  5. Step 5: Solve for x
    x = 286,095,929,045.10/611,166.60
  6. Step 6: Final answer
    x = 468,114.47

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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.