Home / 309,621.02-427,281.90-173,685.20

Finding the Fourth Proportional to 309,621.02, 427,281.90 and 173,685.20

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Solution

The fourth proportional to 309,621.02, 427,281.90 and 173,685.20 is: 239,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,621.02 : 427,281.90 = 173,685.20 : x
  2. Step 2: Convert to fraction form
    309,621.02/427,281.90 = 173,685.20/x
  3. Step 3: Cross multiply
    309,621.02x = 427,281.90 × 173,685.20
  4. Step 4: Simplify right side
    309,621.02x = 74,212,542,257.88
  5. Step 5: Solve for x
    x = 74,212,542,257.88/309,621.02
  6. Step 6: Final answer
    x = 239,688.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.