Home / 211,681.28-317,525.16-53,912.72

Finding the Fourth Proportional to 211,681.28, 317,525.16 and 53,912.72

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Solution

The fourth proportional to 211,681.28, 317,525.16 and 53,912.72 is: 80,869.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,681.28 : 317,525.16 = 53,912.72 : x
  2. Step 2: Convert to fraction form
    211,681.28/317,525.16 = 53,912.72/x
  3. Step 3: Cross multiply
    211,681.28x = 317,525.16 × 53,912.72
  4. Step 4: Simplify right side
    211,681.28x = 17,118,645,044.04
  5. Step 5: Solve for x
    x = 17,118,645,044.04/211,681.28
  6. Step 6: Final answer
    x = 80,869.91

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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.