Home / 811,975.05-1,217,875.10-212,996.25

Finding the Fourth Proportional to 811,975.05, 1,217,875.10 and 212,996.25

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Solution

The fourth proportional to 811,975.05, 1,217,875.10 and 212,996.25 is: 319,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,975.05 : 1,217,875.10 = 212,996.25 : x
  2. Step 2: Convert to fraction form
    811,975.05/1,217,875.10 = 212,996.25/x
  3. Step 3: Cross multiply
    811,975.05x = 1,217,875.10 × 212,996.25
  4. Step 4: Simplify right side
    811,975.05x = 259,402,828,203.39
  5. Step 5: Solve for x
    x = 259,402,828,203.39/811,975.05
  6. Step 6: Final answer
    x = 319,471.43

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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.