Home / 205,153.40-307,730.10-202,388.60

Finding the Fourth Proportional to 205,153.40, 307,730.10 and 202,388.60

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Solution

The fourth proportional to 205,153.40, 307,730.10 and 202,388.60 is: 303,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,153.40 : 307,730.10 = 202,388.60 : x
  2. Step 2: Convert to fraction form
    205,153.40/307,730.10 = 202,388.60/x
  3. Step 3: Cross multiply
    205,153.40x = 307,730.10 × 202,388.60
  4. Step 4: Simplify right side
    205,153.40x = 62,281,064,116.86
  5. Step 5: Solve for x
    x = 62,281,064,116.86/205,153.40
  6. Step 6: Final answer
    x = 303,582.90

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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.