Home / 208,986.40-288,466.80-133,535.20

Finding the Fourth Proportional to 208,986.40, 288,466.80 and 133,535.20

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Solution

The fourth proportional to 208,986.40, 288,466.80 and 133,535.20 is: 184,320.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,986.40 : 288,466.80 = 133,535.20 : x
  2. Step 2: Convert to fraction form
    208,986.40/288,466.80 = 133,535.20/x
  3. Step 3: Cross multiply
    208,986.40x = 288,466.80 × 133,535.20
  4. Step 4: Simplify right side
    208,986.40x = 38,520,471,831.36
  5. Step 5: Solve for x
    x = 38,520,471,831.36/208,986.40
  6. Step 6: Final answer
    x = 184,320.47

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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.