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Finding the Fourth Proportional to 258,876.70, 388,084.20 and 101,068.45

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Solution

The fourth proportional to 258,876.70, 388,084.20 and 101,068.45 is: 151,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,876.70 : 388,084.20 = 101,068.45 : x
  2. Step 2: Convert to fraction form
    258,876.70/388,084.20 = 101,068.45/x
  3. Step 3: Cross multiply
    258,876.70x = 388,084.20 × 101,068.45
  4. Step 4: Simplify right side
    258,876.70x = 39,223,068,563.49
  5. Step 5: Solve for x
    x = 39,223,068,563.49/258,876.70
  6. Step 6: Final answer
    x = 151,512.55

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1.5x scale

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.