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Finding the Fourth Proportional to 518,080.40, 776,890.20 and 237,683.60

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Solution

The fourth proportional to 518,080.40, 776,890.20 and 237,683.60 is: 356,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,080.40 : 776,890.20 = 237,683.60 : x
  2. Step 2: Convert to fraction form
    518,080.40/776,890.20 = 237,683.60/x
  3. Step 3: Cross multiply
    518,080.40x = 776,890.20 × 237,683.60
  4. Step 4: Simplify right side
    518,080.40x = 184,654,059,540.72
  5. Step 5: Solve for x
    x = 184,654,059,540.72/518,080.40
  6. Step 6: Final answer
    x = 356,419.70

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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.