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Finding the Fourth Proportional to 286,705.89, 430,110.69 and 118,132.45

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Solution

The fourth proportional to 286,705.89, 430,110.69 and 118,132.45 is: 177,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,705.89 : 430,110.69 = 118,132.45 : x
  2. Step 2: Convert to fraction form
    286,705.89/430,110.69 = 118,132.45/x
  3. Step 3: Cross multiply
    286,705.89x = 430,110.69 × 118,132.45
  4. Step 4: Simplify right side
    286,705.89x = 50,810,028,505.61
  5. Step 5: Solve for x
    x = 50,810,028,505.61/286,705.89
  6. Step 6: Final answer
    x = 177,220.04

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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.