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Finding the Fourth Proportional to 611,149.08, 843,382.80 and 339,220.20

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Solution

The fourth proportional to 611,149.08, 843,382.80 and 339,220.20 is: 468,122.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,149.08 : 843,382.80 = 339,220.20 : x
  2. Step 2: Convert to fraction form
    611,149.08/843,382.80 = 339,220.20/x
  3. Step 3: Cross multiply
    611,149.08x = 843,382.80 × 339,220.20
  4. Step 4: Simplify right side
    611,149.08x = 286,092,482,092.56
  5. Step 5: Solve for x
    x = 286,092,482,092.56/611,149.08
  6. Step 6: Final answer
    x = 468,122.25

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1.5x scale

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.