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Finding the Fourth Proportional to 258,848.60, 388,491.60 and 101,190.20

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Solution

The fourth proportional to 258,848.60, 388,491.60 and 101,190.20 is: 151,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,848.60 : 388,491.60 = 101,190.20 : x
  2. Step 2: Convert to fraction form
    258,848.60/388,491.60 = 101,190.20/x
  3. Step 3: Cross multiply
    258,848.60x = 388,491.60 × 101,190.20
  4. Step 4: Simplify right side
    258,848.60x = 39,311,542,702.32
  5. Step 5: Solve for x
    x = 39,311,542,702.32/258,848.60
  6. Step 6: Final answer
    x = 151,870.80

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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.