Home / 211,731.80-317,828.10-118,419.80

Finding the Fourth Proportional to 211,731.80, 317,828.10 and 118,419.80

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Solution

The fourth proportional to 211,731.80, 317,828.10 and 118,419.80 is: 177,758.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,731.80 : 317,828.10 = 118,419.80 : x
  2. Step 2: Convert to fraction form
    211,731.80/317,828.10 = 118,419.80/x
  3. Step 3: Cross multiply
    211,731.80x = 317,828.10 × 118,419.80
  4. Step 4: Simplify right side
    211,731.80x = 37,637,140,036.38
  5. Step 5: Solve for x
    x = 37,637,140,036.38/211,731.80
  6. Step 6: Final answer
    x = 177,758.56

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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.