Home / 205,289.60-307,934.40-134,430.80

Finding the Fourth Proportional to 205,289.60, 307,934.40 and 134,430.80

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Solution

The fourth proportional to 205,289.60, 307,934.40 and 134,430.80 is: 201,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,289.60 : 307,934.40 = 134,430.80 : x
  2. Step 2: Convert to fraction form
    205,289.60/307,934.40 = 134,430.80/x
  3. Step 3: Cross multiply
    205,289.60x = 307,934.40 × 134,430.80
  4. Step 4: Simplify right side
    205,289.60x = 41,395,867,739.52
  5. Step 5: Solve for x
    x = 41,395,867,739.52/205,289.60
  6. Step 6: Final answer
    x = 201,646.20

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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.