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Finding the Fourth Proportional to 518,847.60, 778,012.20 and 238,047.60

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Solution

The fourth proportional to 518,847.60, 778,012.20 and 238,047.60 is: 356,952.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,847.60 : 778,012.20 = 238,047.60 : x
  2. Step 2: Convert to fraction form
    518,847.60/778,012.20 = 238,047.60/x
  3. Step 3: Cross multiply
    518,847.60x = 778,012.20 × 238,047.60
  4. Step 4: Simplify right side
    518,847.60x = 185,203,936,980.72
  5. Step 5: Solve for x
    x = 185,203,936,980.72/518,847.60
  6. Step 6: Final answer
    x = 356,952.48

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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.