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Finding the Fourth Proportional to 578,830.40, 868,245.60 and 158,148.80

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Solution

The fourth proportional to 578,830.40, 868,245.60 and 158,148.80 is: 237,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,830.40 : 868,245.60 = 158,148.80 : x
  2. Step 2: Convert to fraction form
    578,830.40/868,245.60 = 158,148.80/x
  3. Step 3: Cross multiply
    578,830.40x = 868,245.60 × 158,148.80
  4. Step 4: Simplify right side
    578,830.40x = 137,311,999,745.28
  5. Step 5: Solve for x
    x = 137,311,999,745.28/578,830.40
  6. Step 6: Final answer
    x = 237,223.20

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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.