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Finding the Fourth Proportional to 256,991.04, 385,603.20 and 152,015.04

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Solution

The fourth proportional to 256,991.04, 385,603.20 and 152,015.04 is: 228,091.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,991.04 : 385,603.20 = 152,015.04 : x
  2. Step 2: Convert to fraction form
    256,991.04/385,603.20 = 152,015.04/x
  3. Step 3: Cross multiply
    256,991.04x = 385,603.20 × 152,015.04
  4. Step 4: Simplify right side
    256,991.04x = 58,617,485,872.13
  5. Step 5: Solve for x
    x = 58,617,485,872.13/256,991.04
  6. Step 6: Final answer
    x = 228,091.55

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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.