Home / 211,780.71-315,802.87-182,387.43

Finding the Fourth Proportional to 211,780.71, 315,802.87 and 182,387.43

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Solution

The fourth proportional to 211,780.71, 315,802.87 and 182,387.43 is: 271,972.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,780.71 : 315,802.87 = 182,387.43 : x
  2. Step 2: Convert to fraction form
    211,780.71/315,802.87 = 182,387.43/x
  3. Step 3: Cross multiply
    211,780.71x = 315,802.87 × 182,387.43
  4. Step 4: Simplify right side
    211,780.71x = 57,598,473,389.96
  5. Step 5: Solve for x
    x = 57,598,473,389.96/211,780.71
  6. Step 6: Final answer
    x = 271,972.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.