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Finding the Fourth Proportional to 211,528.66, 317,389.84 and 91,622.28

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Solution

The fourth proportional to 211,528.66, 317,389.84 and 91,622.28 is: 137,475.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,528.66 : 317,389.84 = 91,622.28 : x
  2. Step 2: Convert to fraction form
    211,528.66/317,389.84 = 91,622.28/x
  3. Step 3: Cross multiply
    211,528.66x = 317,389.84 × 91,622.28
  4. Step 4: Simplify right side
    211,528.66x = 29,079,980,789.64
  5. Step 5: Solve for x
    x = 29,079,980,789.64/211,528.66
  6. Step 6: Final answer
    x = 137,475.37

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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.