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Finding the Fourth Proportional to 361,126.20, 542,855.70 and 256,668.60

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Solution

The fourth proportional to 361,126.20, 542,855.70 and 256,668.60 is: 385,831.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,126.20 : 542,855.70 = 256,668.60 : x
  2. Step 2: Convert to fraction form
    361,126.20/542,855.70 = 256,668.60/x
  3. Step 3: Cross multiply
    361,126.20x = 542,855.70 × 256,668.60
  4. Step 4: Simplify right side
    361,126.20x = 139,334,012,521.02
  5. Step 5: Solve for x
    x = 139,334,012,521.02/361,126.20
  6. Step 6: Final answer
    x = 385,831.91

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1.5x scale

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.