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Finding the Fourth Proportional to 211,951.64, 292,292.45 and 139,226.60

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Solution

The fourth proportional to 211,951.64, 292,292.45 and 139,226.60 is: 192,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,951.64 : 292,292.45 = 139,226.60 : x
  2. Step 2: Convert to fraction form
    211,951.64/292,292.45 = 139,226.60/x
  3. Step 3: Cross multiply
    211,951.64x = 292,292.45 × 139,226.60
  4. Step 4: Simplify right side
    211,951.64x = 40,694,882,931.72
  5. Step 5: Solve for x
    x = 40,694,882,931.72/211,951.64
  6. Step 6: Final answer
    x = 192,000.80

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1.5x scale

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.