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Finding the Fourth Proportional to 211,263.40, 316,311.90 and 164,607.40

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Solution

The fourth proportional to 211,263.40, 316,311.90 and 164,607.40 is: 246,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,263.40 : 316,311.90 = 164,607.40 : x
  2. Step 2: Convert to fraction form
    211,263.40/316,311.90 = 164,607.40/x
  3. Step 3: Cross multiply
    211,263.40x = 316,311.90 × 164,607.40
  4. Step 4: Simplify right side
    211,263.40x = 52,067,279,448.06
  5. Step 5: Solve for x
    x = 52,067,279,448.06/211,263.40
  6. Step 6: Final answer
    x = 246,456.70

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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.