Home / 305,781.04-458,738.70-128,196.64

Finding the Fourth Proportional to 305,781.04, 458,738.70 and 128,196.64

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Solution

The fourth proportional to 305,781.04, 458,738.70 and 128,196.64 is: 192,323.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,781.04 : 458,738.70 = 128,196.64 : x
  2. Step 2: Convert to fraction form
    305,781.04/458,738.70 = 128,196.64/x
  3. Step 3: Cross multiply
    305,781.04x = 458,738.70 × 128,196.64
  4. Step 4: Simplify right side
    305,781.04x = 58,808,759,977.97
  5. Step 5: Solve for x
    x = 58,808,759,977.97/305,781.04
  6. Step 6: Final answer
    x = 192,323.11

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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.