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Finding the Fourth Proportional to 400,630.80, 600,071.40 and 242,583.60

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Solution

The fourth proportional to 400,630.80, 600,071.40 and 242,583.60 is: 363,345.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,630.80 : 600,071.40 = 242,583.60 : x
  2. Step 2: Convert to fraction form
    400,630.80/600,071.40 = 242,583.60/x
  3. Step 3: Cross multiply
    400,630.80x = 600,071.40 × 242,583.60
  4. Step 4: Simplify right side
    400,630.80x = 145,567,480,469.04
  5. Step 5: Solve for x
    x = 145,567,480,469.04/400,630.80
  6. Step 6: Final answer
    x = 363,345.70

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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.