Home / 205,411.30-307,598.55-163,939.30

Finding the Fourth Proportional to 205,411.30, 307,598.55 and 163,939.30

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Solution

The fourth proportional to 205,411.30, 307,598.55 and 163,939.30 is: 245,495.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,411.30 : 307,598.55 = 163,939.30 : x
  2. Step 2: Convert to fraction form
    205,411.30/307,598.55 = 163,939.30/x
  3. Step 3: Cross multiply
    205,411.30x = 307,598.55 × 163,939.30
  4. Step 4: Simplify right side
    205,411.30x = 50,427,490,968.02
  5. Step 5: Solve for x
    x = 50,427,490,968.02/205,411.30
  6. Step 6: Final answer
    x = 245,495.21

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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.