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Finding the Fourth Proportional to 611,236.48, 916,855.08 and 211,877.32

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Solution

The fourth proportional to 611,236.48, 916,855.08 and 211,877.32 is: 317,816.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,236.48 : 916,855.08 = 211,877.32 : x
  2. Step 2: Convert to fraction form
    611,236.48/916,855.08 = 211,877.32/x
  3. Step 3: Cross multiply
    611,236.48x = 916,855.08 × 211,877.32
  4. Step 4: Simplify right side
    611,236.48x = 194,260,797,178.79
  5. Step 5: Solve for x
    x = 194,260,797,178.79/611,236.48
  6. Step 6: Final answer
    x = 317,816.10

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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.