Home / 258,865.39-357,258.36-151,428.61

Finding the Fourth Proportional to 258,865.39, 357,258.36 and 151,428.61

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Solution

The fourth proportional to 258,865.39, 357,258.36 and 151,428.61 is: 208,985.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,865.39 : 357,258.36 = 151,428.61 : x
  2. Step 2: Convert to fraction form
    258,865.39/357,258.36 = 151,428.61/x
  3. Step 3: Cross multiply
    258,865.39x = 357,258.36 × 151,428.61
  4. Step 4: Simplify right side
    258,865.39x = 54,099,136,865.68
  5. Step 5: Solve for x
    x = 54,099,136,865.68/258,865.39
  6. Step 6: Final answer
    x = 208,985.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.