Home / 307,801.02-461,864.10-218,421.30

Finding the Fourth Proportional to 307,801.02, 461,864.10 and 218,421.30

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Solution

The fourth proportional to 307,801.02, 461,864.10 and 218,421.30 is: 327,747.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,801.02 : 461,864.10 = 218,421.30 : x
  2. Step 2: Convert to fraction form
    307,801.02/461,864.10 = 218,421.30/x
  3. Step 3: Cross multiply
    307,801.02x = 461,864.10 × 218,421.30
  4. Step 4: Simplify right side
    307,801.02x = 100,880,957,145.33
  5. Step 5: Solve for x
    x = 100,880,957,145.33/307,801.02
  6. Step 6: Final answer
    x = 327,747.31

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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.