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Finding the Fourth Proportional to 611,325.09, 916,692.66 and 256,243.77

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Solution

The fourth proportional to 611,325.09, 916,692.66 and 256,243.77 is: 384,242.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,325.09 : 916,692.66 = 256,243.77 : x
  2. Step 2: Convert to fraction form
    611,325.09/916,692.66 = 256,243.77/x
  3. Step 3: Cross multiply
    611,325.09x = 916,692.66 × 256,243.77
  4. Step 4: Simplify right side
    611,325.09x = 234,896,783,129.73
  5. Step 5: Solve for x
    x = 234,896,783,129.73/611,325.09
  6. Step 6: Final answer
    x = 384,242.01

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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.