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Finding the Fourth Proportional to 258,102.58, 355,357.65 and 220,224.82

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Solution

The fourth proportional to 258,102.58, 355,357.65 and 220,224.82 is: 303,207.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,102.58 : 355,357.65 = 220,224.82 : x
  2. Step 2: Convert to fraction form
    258,102.58/355,357.65 = 220,224.82/x
  3. Step 3: Cross multiply
    258,102.58x = 355,357.65 × 220,224.82
  4. Step 4: Simplify right side
    258,102.58x = 78,258,574,506.87
  5. Step 5: Solve for x
    x = 78,258,574,506.87/258,102.58
  6. Step 6: Final answer
    x = 303,207.25

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1.5x scale

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.