Home / 211,979.12-317,276.40-155,804.36

Finding the Fourth Proportional to 211,979.12, 317,276.40 and 155,804.36

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Solution

The fourth proportional to 211,979.12, 317,276.40 and 155,804.36 is: 233,197.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,979.12 : 317,276.40 = 155,804.36 : x
  2. Step 2: Convert to fraction form
    211,979.12/317,276.40 = 155,804.36/x
  3. Step 3: Cross multiply
    211,979.12x = 317,276.40 × 155,804.36
  4. Step 4: Simplify right side
    211,979.12x = 49,433,046,445.10
  5. Step 5: Solve for x
    x = 49,433,046,445.10/211,979.12
  6. Step 6: Final answer
    x = 233,197.72

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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.